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GEISSELE AR 308 HI-SPEED NATIONAL MATCH TRIGGER SET

by Donald Sullivan | Jul 16, 2017 | Trigger, Geissele | 0 comments

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GEISSELE AR 308 HI-SPEED NATIONAL MATCH TRIGGER SET

User-Adjustable, Adaptable Premium Trigger

GEISSELE AR 308 HI-SPEED NATIONAL MATCH TRIGGER SET combines their exceptional match-grade trigger with their Service Rifle, Designated Marksman Rifle, and Match Rifle Spring sets. Geissele’s adjustable Hi-Speed National Match 308 AR Trigger is designed for competition, hunting, and tactical sniper use, where exact trigger pull weight is essential for success.

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The trigger comes with three spring sets, each applicable to a different type of shooting. The Hi-Speed Service Spring is designed for NRA High Power Service Rifle competition and is approved for use in CMP sanctioned competitions. Easily switch to the Hi-Speed Designated Marksman Rifle spring set for tactical and military shooting where trigger pull weight is not regulated. Hi-Speed Match spring set can be adjusted to low pull weights for enhanced trigger control, letting the shooter wring every ounce of accuracy out of his rifle

Service Rifle pull: 3.2-5 lbs. (1st), .5 to 1.5 lbs. (2nd), 4.5 lbs. min. (total)
DMR pull: 2.5 to 3.6 lbs. (1st), .5 to 1.5 lbs. (2nd), 3 to 5.1 lbs. (total)
Match Rifle pull: 1.5 to 2.5 lbs. (1st), 8 oz. to 14 oz. (2nd), 1.9 to 3.4 lbs. (total)

With the Geissele Hi-Speed National Match Trigger in your AR 308, you can easily adjust the triggers first and second stage weight, as well as total pull weight and over-travel to your exact preference.

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GEISSELE 308 HI-SPEED NATIONAL MATCH TRIGGER SET

Hi-Speed National Match Triggers
Geissele Automatics currently offers three large pin Hi-Speed trigger products. These adjustable triggers are specially designed for competition, hunting, tactical, and military use, where both accuracy and robustness are critical. As an adjustable trigger, the first and second stage weight distribution, as well as, total pull weight, over-travel, and sear engagement are all to be tuned to the shooters preference.

The Geissele Service Spring Set
The Geissele Hi-Speed Service is designed for NRA High Power Service Rifle competition. It is an approved trigger for use in CMP sanctioned competitions such as: National Trophy, NTIT and all Excellence In Competition matches. Service Rifle competitions require military-based weapons to meet certain criteria, one of which is a minimum trigger pull weight of 4.5 lbs. Our Service Rifle Trigger includes our exclusive 5-Coil trigger spring which will give a nominal 4 lbs. on first stage. The Service trigger pull weights are biased with most of the pull weight on the first stage. This will allow a light second stage with an icicle-sharp break, effectively giving your weapon a match-grade trigger let-off.

The Geissele DMR Spring Set
The Geissele Hi-Speed Designated Marksman Rifle is designed for tactical and military shooting where trigger pull weight is not regulated. Perfect for all precision tactical shooting and squad Designated Marksmen, the higher second stage weight helps in high-stress shooting situations.

The Geissele Match Spring Set
The Geissele Hi-Speed Match is designed for NRA High Power Rifle competition with highly modified AR-15 Space guns. AR-15 Space guns are the Formula 1 weapons of High Power Rifle competition. With very few restrictions, these highly customized semi-automatic weapons are intended to produce extreme accuracy at long range. The Geissele Match Trigger is a perfect Space gun add-on as the pull weight can be adjusted to low levels that enhance trigger control. The fast lock time assists the shooter in getting every ounce of accuracy out of his weapon. The Hi-Speed hammer uses a full-power hammer spring which imparts more kinetic energy into the firing pin, producing much more consistent primer ignition – especially with experimental cartridges or AR 308, 308 AR and AR-10 based weapons.

GEISSELE AR 308 HI-SPEED NATIONAL MATCH TRIGGER SET INSTRUCTIONS

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GEISSELE AR 308 HI-SPEED NATIONAL MATCH TRIGGER SET INSTRUCTIONS SALES FLYER

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Precision Armament M41 AR 308 Muzzle Brake

by Donald Sullivan | Jun 22, 2017 | Muzzle Brakes | 0 comments

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Picture of a Precision Armament M41 AR 308 Muzzle Brake mounted on a 308 AR Rifle Barrel

Precision Armament M41 308 AR Muzzle Brake

The Precision Armament M41Muzzle Brake may not have the “tactical” or “aggressive” look that many 308 AR rifle shooters seem to prefer today. What this muzzle brake does have to offer is proven performance in the field and that is what really matters. Most Precision Armament M41owners are shocked at how well this muzzle brake reduces felt recoil on the .308 Winchester and .300 Winchester Magnum calibers. You can read many reviews of the Precision Armament M41 muzzle brake at the “learn more” button below.

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A few items of interest to note. This muzzle brake like many others needs to be timed to the barrel. That simply means the muzzle brake has a very specific horizontal orientation. This is so the blast goes away from the shooter and not towards the ground. Simply tightening the muzzle brake to the barrel will result in a random orientation. The use of a crush washer or Rocksett thread locker are the best methods to achieve proper orientation. The crush washer is the easiest method but least attractive. The Rocksett is the best solution. This is the same method used with muzzle brakes and flash hiders with silencers and sound suppressors. (see below) To avoid damaging the muzzle brake finish Precision Armament suggests using a spanner wrench which they offer. (see below)

We will be using the Precision Armament M41 sibling the M11 308 Muzzle Brake on the 6.5 Creedmoor Long Range Sniper Rifle at our Modular Rifle Site. There’s also some discussion on the forum

Precision Armament M41 AR 308 Muzzle Brake Specification Sheet

[pdf-embedder url=”https://308ar.com/wp-content/uploads/2017/06/Precision-Armament-M41-AR-308-Muzzle-Brake-Specification-Sheet.pdf” title=”Precision Armament M41 AR 308 Muzzle Brake Specification Sheet”]

Precision Armament M41 AR 308 Muzzle Brake Installation Guide

[pdf-embedder url=”https://308ar.com/wp-content/uploads/2017/06/Precision-Armament-M41-AR-308-Muzzle-Brake-Installation-Guide.pdf” title=”Precision Armament M41 AR 308 Muzzle Brake Installation Guide”]

Precision Armament M41 Severe Duty AR 308 Muzzle Brake

Three large axisymmetric baffles, each featuring five helical ports, redirect a massive volume of gas away from the bore axis in a counter-clockwise radial direction. This not only provides maximum recoil reduction but also reduces the torsional recoil force associated with heavy bullets and fast twist rates. High tolerance class-3 threads machined in same operation as bore aperture ensures perfect concentricity; this combined with a progressively decreasing baffle thickness and maximized venting area significantly reduce bullet flight disturbance resulting in less yaw, higher BC, and improved accuracy. Computer FEA optimized for maximum strength to weight ratio and impact survivability. Precision CNC machined from high strength HTSR 400-series stainless steel bar for superior heat and corrosion resistance. Offered in either an ultra wear resistant DLC (Diamond-Like Carbon) matte black finish, or stainless steel in-the-white, matte finish.

This muzzle brake is designed to fit 5/8-24 threaded barrels and can also be modified by a qualified gunsmith to fit larger thread diameters (up to 3/4″ or 18mm).

Available in three calibers:

6.5mm / .264 Caliber (for use on rifles .22-.264 caliber)
7.62mm / .308 Caliber (for use on rifles .264-.308 caliber)
8.6mm / .338 Caliber (for use on rifles .308-.338 caliber)

Precision Armament M41 AR 308 Muzzle Brake Specifications

Material: HTSR 416 stainless steel bar, HRC 26-32
Finish: DLC matte black finish – or – Stainless steel in the white, matte finish
Thread: 5/8-24 TPI
Length: 2.750″
Diameter: 1.3125″
Dia at Barrel: 0.925″
Weight: 5.3 oz.

Geissele SSA Trigger | Geissele Trigger SSA | SSA-E

by Donald Sullivan | May 20, 2017 | Trigger, Geissele | 0 comments

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Geissele SSA Trigger, SSA-E Trigger

The Geissele SSA trigger is a semi-automatic only version of Geissele Automatics’s Super Select-Fire trigger. The Geissele SSA is a 4.5lb. non-adjustable combat trigger that is a precision two-stage trigger and allows precise and accurate trigger control. The SSA’s two-stage design allows the trigger to be light enough for accurate and precise shots, but forgiving enough for CQB. The SSA is safety certified by Crane Naval Surface Warfare Center. It is recommended for demanding applications such as Law Enforcement use, Close Quarters Battle (CQB) and mid-range carbine work.

Size: Standard Mil-Spec Pin, Trigger Bow Type M4 Curved, Weapon Platform AR15, AR-10, 308 AR

You might also like ATC SR Gold Trigger…

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Geissele SSA 2-stage combat trigger has a fixed 4½ lb. total pull weight, non-adjustable sear engagement, and additional safety features ideal for CQB and mid-range carbine work. A secondary “safety sear” captures the hammer if the primary sear accidentally releases due to hard impact, ensuring the rifle can fire only when the shooter actually pulls the trigger.

Trigger pull is optimized for both deliberate, aimed fire and quick, “snap shooting.” The first stage builds gradually to 2½ lbs., with a 2 lb. second stage that breaks clean, so the shooter can stay on target throughout the pull. A lightweight hammer driven by a full-power hammer spring speeds lock time and delivers positive ignition of all ammo types. All contact surfaces are wire EDM cut to exact dimensions for precise engagement free of play.

Direct replacement for factory trigger; may be installed without removing the safety. Operation and parts layout is similar to the USGI M16 trigger for easy maintenance. All springs are captive to simplify field disassembly for cleaning. Hammer and trigger pins are a close slip-fit in nominal .154″ (small pin) mil-spec receiver holes to enable installation with basic tools.

Geissele SSA-E Trigger

Geissele SSA-E Trigger offers an even lighter, 3½ lb. total pull weight, making it an excellent choice for precision Squad Designated Marksman type rifles where both accuracy and reliability are critical. First stage builds gradually to 2.3 lbs., followed by a 1.2 lb. second stage with a crisp, “candy cane-like” break. A semi-auto-only version of the Geissele full-auto combat trigger presently used in the U.S. Special Operations community.

SPECS: Steel, black finish. Fits semi-automatic AR-15/M16 receivers with .154″ diameter hammer and trigger pin holes. May be installed in AR-style .308 rifles that accept AR-15 triggers. Kit includes trigger and hammer assemblies, springs, hammer pin, tube of grease, and illustrated instructions.

Geissele Super Semi-Automatic (SSA) Trigger

GEISSELE SUPER SEMI-AUTOMATIC (SSA®) TRIGGER

The Geissele Super Semi-Automatic (SSA) Trigger is the semi-auto only version of a select fire trigger that Geissele makes for customers in the U.S. Special Operations community. The SSA is a non-adjustable combat trigger, it is not a match trigger. The second stage break is like a carrot rather than an icicle. Suitable for Close Quarters Battle (CQB) and mid-range carbine work, the Geissele SSA is also the perfect trigger for Squad Designated Marksman (SDM) rifles. A short summary of the Geissele SSA features and advantages follows.

Download – Geissele Super-Semi-Automatic SSA Trigger Sales Flyer

Performance Advantages for the Shooter

The Geissele SSA Trigger has a pull weight of about 4.5lb. 2.5 lbs on the first stage and 2lb on the second stage. The pull weights and sear engagement are non adjustable by the shooter.
Geissele Trigger and hammer are made from quality tool steel
Sear surfaces are cut by a wire edm machine. Sears cut this way are very accurate and the non-directional surface finish of the wire edm gives a smooth trigger pull without the associated grittiness of directional machining marks left by a milling cutter.
The initial force needed to start the disengagement of the sear surfaces is low and the force linearly increases at a low rate. This helps the shot to fall at the initial point of aim and aids in building shooter confidence in his weapons ability to put the rounds where his sight is pointing.
The Geissele SSA trigger allows the shooter to slap through the trigger pull on close in shots but also set up a long range shot with a crisp trigger break.
A full force hammer spring is used for quick lock time and positive ignition of all types of ammo. There is no lightened hammer spring used.
The hammer is lighter than a standard AR15 hammer. The lightened hammer favorably decreases lock time and increases accuracy of the weapon, especially for snap shots.

Advantages for the Armorer

The Geissele SSA is a simple design that is very similar to the original M16 trigger. The number of parts is identical.
There are no adjustment screws to come loose. All springs are captive; they will not get lost during disassembly in the field
The entire trigger can be dissembled for cleaning (no rivets or staked parts)
The trigger can be installed without removing the safety
Sear engagement is pre-set from the factory
Hammer and trigger pins are a close slip fit into nominal receiver holes so the trigger can be installed and removed with

rudimentary tools.
Triggers come with a slave pin for the trigger/disconnector assembly for easy installation.

Safety Advantages

The Geissele SSA is a 2 stage trigger where there is generous overlap of the sear surfaces which contributes to safety and a low tendency of any inadvertent movement of the trigger to discharge the weapon.
The Geissele SSA has a patented pseudo sear that is almost identical to the standard AR15 single stage sear. However, this secondary sear has surfaces that never touch during normal operation. This sear prevents the hammer from falling unless the trigger is pulled.
The secondary safety sear contributes to shooter confidence in dynamic/vehicle situations where a fellow shooter’s muzzle may cover him. There is firm knowledge that even with the safety in the fire position the weapon can never discharge unless the trigger is pulled.
Trigger timing is robust and parts have been sized to operate with a certain amount of wear to the working surfaces. The trigger is designed to operate in dusty, abrasive environments that cause wear.

*Triggers for Colt large pin rifles are available., *The Geissele SSA does not fit HK416 weapons with firing pin safety

GEISSELE SSA TRIGGER INSTALLATION INSTRUCTIONS

GEISSELE SUPER SEMI-AUTOMATIC (SSA®) TRIGGER INSTALLATION INSTRUCTIONS

READ THIS FIRST – Firearm safety is YOUR responsibility. You must memorize and put into practice the 4 Rules of Firearm Safety:

ASSUME EVERY WEAPON IS LOADED.
KEEP YOUR FINGER OFF THE TRIGGER UNTIL YOU ARE READY TO SHOOT.
DO NOT LET THE MUZZLE POINT AT ANYTHING YOU ARE NOT WILLING TO DESTROY.
KNOW YOUR TARGET AND WHAT IS BEYOND.

Download – Geissele SSA Trigger Installation Instructions

GEISSELE SSA TRIGGER INSTALLATION INSTRUCTIONS

Unload rifle and make safe.
Remove existing trigger and clean receiver. It is not necessary to remove the safety.
Remove the trigger pin from the trigger and replace with the slave pin to hold the disconnector in place.
Install trigger and slave pin into rifle. Align slave pin with receiver pin holes. Insert trigger pin into receiver, through trigger/disconnector, and into receiver on opposite side.
Remove hammer pin from hammer. Place a drop of lubricant in the bore of the hammer pivot.
Install hammer into receiver with hammer spring legs on top of the trigger pin. Insert hammer pin into receiver, through hammer, and into receiver on opposite side.
Apply a small amount of lubricant in the following locations: a. Each side of the disconnector above the trigger pin b. Hammer and trigger sears c. Face of the disconnector d. Hammer tail where it contacts the disconnector; e. Top of each side of the hammer spring where the spring contacts the receiver wall.
Check safety operation: With the hammer cocked and the safety selector set to the SAFE position, pull the trigger hard. The hammer should not fall.
Check trigger reset: Set safety selector to FIRE. Dry fire weapon and keep trigger held back. Pull charging handle all the way back and release, letting the bolt carrier snap forward. The hammer should not fall. Release trigger. Hammer should be caught by the trigger.
Check for the presence of a second stage: Set the safety selector to FIRE. Pull the trigger through the first stage until it comes to a distinct stop—this is the second stage. Applying additional pressure to the trigger will allow the weapon to discharge. Maintenance of the SSA trigger consists of occasionally placing a drop of lubricant on the locations shown in #7 above. Recommended lubrcant is CLP or equivalent; alternatively a high quality grease may be used on the trigger/hammer sears and disconnector contact surfaces. When the trigger and lower receiver well become very dirty (such as when firing with a suppressor), it is not always necessary to remove the trigger group for cleaning. Spray down the trigger group with electrical contact cleaner to remove residual oil and dirt. Next, use compressed air to blow off the trigger group and then flush liberally with a light lubricant as CLP or equivalent. Blow off excess lubricant with compressed air and lubricate as noted above. The Geissele Super Semi-Automatic trigger is a 4.5 lb. non-adjustable precision combat trigger and allows precise and accurate trigger control. The SSA’s two-staged design allows the trigger to be light enough for accurate and precise shots, but heavy and forgiving enough to be safe. The SSA is safety certified by Crane Naval Surface Warfare Center. It is recommended for demanding applications such as Law Enforcement use, Close Quarters Battle (CQB) and mid-range carbine work. The SSA Trigger will lighten the trigger pull relative to a standard trigger. This lightened trigger pull will make the firearm easier to discharge. You must recognize and accept this fact before installing this trigger. If you do not want a lighter than standard trigger pull or are not willing to accept responsibility for the safety of your firearm, yourself, and those around you, do not install this trigger. Geissele Automatics recommends installation by a certified gunsmith only.

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308 AR Bolt Carrier Group Nitride Coated Brownells

Brownells adds a Nitride Coated, Magnetic Particle Inspected BCG to their 308 Bolt Carrier Lineup. The bolt carrier group comes in at a cost of $169 which is lower than name brand phosphate coated 308 AR Bolt Carrier Groups.

Brownells 308 AR Bolt Carrier Group Nitride Coated MP Inspected

Brownells 308 Winchester, DPMS/SR-25 Pattern, Complete Bolt Carrier Group with Nitride finish, featuring Magnetic Particle Inspected, 9310 Bolt.

Brownells complete 308 Bolt Carrier Group includes all the components necessary to drop into your 308, DPMS/SR25 pattern AR and start running. The black nitride version offers a superior finish, which provides excellent corrosion resistance, while retaining lubricity. All components are properly machined & heat treated, with the heart being the 9310, Magnetic Particle Inspected Bolt. This testing ensures that the bolt is free of defects, and the 9310 steel will hold up to the harshest shooting regimen, especially the powerful 308 Winchester, 7.62x51mm NATO or other variant cartridges.

Complete 308 Bolt Carrier Group includes:

Fully assembled Bolt Carrier Group; including the bolt, bolt carrier, gas key, firing pin, cam pin, and firing pin retaining pin
Every Bolt is Magnetic Particle Inspected (MPI)
The Bolt is machined from 9310 steel
Following machining, the Bolt is heat treated and shot peened
Installed extractor includes black rubber insert with spring
Bolt Carrier is machined from 8620 steel and hardened
Gas Key Screws are properly torqued and staked
Bolt and Bolt Carrier feature a matte black nitride finish

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RADICAL FIREARMS AR308 SPITFIRE FLASH HIDER

by Donald Sullivan | Mar 26, 2017 | Muzzle Brakes | 0 comments

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Radical Firearms AR308 Spitfire Flash Hider

Introducing the Radical Firearms AR308 Spitfire Flash Hider, a Revolutionary New Modular muzzle brake by Radical Firearms. The SpitFire™ is CNC machined using the highest quality materials available and is made in the USA! The body is CNC machined from Billet 4150V Chromoly BAR stock.

The Radical Firearms AR308 Spitfire Flash Hider comes with two interchangeable heads: one a krink style brake that redirects the noise, blast, and concussion forward away from the shooter down range. The other head, The Fireball also redirects the noise, blast and concussion forward but creates a fireball of a flash to astound Hephaestus himself!

Outside Diameter – 1.375″
OAL assembled – 3.200″
Weight assembled – 10 oz with Krink brake
Weight assembled – 9.2 oz with Fireball brake
Thread: 5/8 x 24The break comes with everything you see in the picture, the spitfire housing, the two heads and a crush washer. We highly recommend to use a strap wrench to properly secure or remove the attachment heads.

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CRADDOCK PRECISION AR-10 308 AR BARRELS

by Donald Sullivan | Mar 11, 2017 | 308 AR Barrels, AR-10 Barrels, Craddock Precision | 1 comment

Bartlein Barrels recommends Craddock Precision for 308 AR/AR308 and AR-10 barrels. Yes you read that correctly Craddock Precision offers replacement AR-10 barrels. When one of the best if not THE barrel makers makes a public recommendation it’s worth noting.

Many AR-10 and 308 AR shooters send Bartlein Barrel blanks to Craddock Precision for custom barrel work. (See service below)

CRADDOCK PRECISION AR-10 308 AR/AR 308 BARRELS

CRADDOCK PRECISION AR-10 308 AR BARRELS

Craddock Precision’s .308 barrels are available for both Armalite AR-10 and DPMS style rifles. Using Craddock Precision’s custom .308 match chamber the AR-10, AR 308 style barrels will reliably and accurately shoot 7.62 NATO or .308Win ammo. Rifle barrel muzzles are threaded 5/8 x 24. The current lead time is approximately 3-5 weeks. Calibers for AR10/LR308: .243WIN, .260REM, 6mm Creedmoor, 6.5Creedmoor, 7mm-08, and .308WIN Match

Craddock Precision Custom Services

Barrel Fluting – Craddock Precision offers a variety of flutes, from diamond to flat flutes we do it all. Fluting prices vary, but they depend on the style of fluting along with how long the barrel is. Call or send and email to request a price on fluting.

Time & Blend Muzzle Device to Barrel – Time and blend for the look of a seamless muzzle. Timing the break to the muzzle will help give it a distinct look and help the break function properly, blending the brake onto the barrel will give it that seamless look.

Thread Barrel – We can thread your existing AR15 or AR10 barrel to fit nearly any muzzle device or suppressor.

Re-crown Barrel – The crown is critical to the potential accuracy of the given barrel. We are happy to rework poor factory crowns or repair any damaged muzzles. Any given barrel we can cut down and recrown also we use a 11 degree target crown but are happy to crown to your specifications.

Assemble 308 AR, AR 308, AR-10 Upper Receiver – Craddock Precision will completely assemble an upper receiver’s for valued customers. They only do this if the customer supplies their own parts for the upper, the charge on this assembly would be $50.

Coating – Craddock Precision offers a variety of firearms coatings to meet any budget and demand. Cerakote is extremely wear resistant, virtually untouched by chemicals, and will not rust. This will generally add 2-3 weeks on your lead time.

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