ELFTMANN 308 AR AR-10 TRIGGERS | Drop-In Trigger

by Donald Sullivan | Dec 23, 2017 | Trigger | 0 comments

ELFTMANN 308 AR AR-10 TRIGGERS | Drop-In Trigger

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Elftmann Tactical AR-10, 308 AR Straight Trigger

The Elftmann ELF Drop-In AR-10 Trigger has been built to withstand the punishment of high powered calibers. The only AR-10 trigger using aerospace grade sealed bearings, making for an incredibly smooth and fast trigger pull. Our exclusive .043 double double wound polished piano wire hammer spring ensures full ignition of any ammo including .308 and 7.62×39. Pull weight from 2 3/4lbs to 4lbs is so easy to adjust it can be done in seconds without removing the trigger from your lower receiver. The AR-10 trigger is essentially the service trigger with a lighter pull weight range.

A second-to-none AR-10 drop-in trigger system that is strong and light, made of wire EDM machined, hardened A2 tool steel and lightweight aircraft-grade aluminum. Installation can be done in minutes using your AR’s original hammer and trigger pins. The AR-10 trigger may be ordered with a curved or straight shoe.

The amazingly short take-up, glass-rod crisp break and next to zero overtravel can be compared to the finest custom 1911 triggers. Adjustability puts you in charge based on your preference. If you are looking for the finest adjustable trigger for your AR-10 platform, this is the trigger system for you

Fits any mil-spec AR-10 (Large pin Colt available)
Absolutely Drop-Safe regardless of pull-weight
Adjustable from 2 3/4lbs to 4lbs without removing from lower
Exclusive double double wound hammer spring and heavy hammer ensure proper ignition of any ammunition
Very short pull and reset allows for rapid follow up shots and greater accuracy
Sturdy trigger assembly designed for rugged, trouble-free use; Made of lightweight aircraft-grade aluminum and hardened steel
Unique design of disconnect allows full 1/4” width eliminating possibility of wear and double-firing
High performance trigger and hammer needle bearings for smoother and faster firing
100% made in America with a Lifetime Guarantee!

Read about more AR-10 Triggers here….

Elftmann Tactical AR-10, 308 AR Straight Trigger

The Elftmann Tactical AR-10 / .308 Straight Trigger is specially designed to stand up to the heavy recoil produced by short-action cartridges in the AR-style .308 platform, ensuring that owners have a trigger system they can depend on, round after round.

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Elftmann Tactical AR-10, 308 AR Straight Trigger

The Elftmann Tactical AR-10 / .308 Straight Trigger is machined and assembled with a combination of A2 tool steel and aircraft-grade aluminum. The trigger assembly also features needle bearings on hammer and trigger pivot points for smooth operation, and the hammer spring is double-wound from .043-inch piano wire in order to provide a more rapid lock time.

Drops into all standard AR-style .308 lower receivers (Large pin Colt available)
Adjustable pull weight from 2.75-4 pounds
Built with 1/4-inch disconnector for added resistance to wear
Installs with standard trigger pins

The Elftmann AR-10 / .308 Straight Trigger provides owners with a short trigger takeup and reset, providing enhanced accuracy and improved follow-up shots.

Elftmann Tactical AR-10, 308 AR Curved Trigger

When it comes to designing a trigger unit for AR-10 rifles, special attention has to be placed on producing a rugged, durable, recoil-proof system that still provides a high-quality pull. The Elftmann Tactical AR-10 / .308 Curved Trigger accomplishes those two goals and still manages to be packed with high-end features.

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Elftmann Tactical AR-10, 308 AR Curved Trigger

The Elftmann Tactical AR-10 / .308 Curved Trigger is machined using a combination of tool steel and aluminum and contains a piano-wire hammer spring that’s double-wound in order to enhance lock time. The trigger and hammer both use needle bearings to provide a smoother, faster mechanism.

Drop-in design (Large pin Colt available)
Adjustable pull weight from 2.75-4 pounds
Built with 1/4-inch disconnector sear for added wear-resistance
Fits any Mil-Spec AR-style .308

The Elftmann Tactical AR-10 Curved Trigger is completely drop-safe and provides AR-style .308 owners with a crisp, clean pull paired with a short takeup and reset.

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WMD NiBXBCG308-N 308 AR Bolt Carrier Group w Nitromet Carrier

WMD NiBXBCG308-N 308 AR Bolt Carrier Group w Nitromet Carrier

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WMD NiBXBCG308-N 308 AR Bolt Carrier Group with Nitromet Carrier

WMD Guns NiBXBCG308-N 308 AR Bolt Carrier Group with Nitromet Carrier is a welcome addition to the ever growing field of 308 AR bolt carrier groups available to shooters today. For the price of a common phosphate 308 bolt carrier group WMD Guns offers a high performance alternative that features the slippery, corrosion and wear resistant Nitromet QPQ coating as well as a heavy duty buffered extractor. The NiBXBCG308-N offers a good option for suppressor equipped 308 rifles.

Visit or 308 AR Bolt Carrier Page

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WMD NiBXBCG308-N 308 AR Bolt Carrier Group with Nitromet Carrier

SKU:NiBXBCG308-N

Check out the WMD Guns NiBXBCG308-N 308 AR Bolt Carrier Group Specs:

Bolt – 9310 heat-treated. Milspec gas rings. NiB-X coated (Rc70, 40% more wear-resistant than chrome).
Extractor – Manufactured, heat treated, and hardened per government drawings. Black extractor, buffer and heavy-duty spring. NiB-X coated.
Firing Pin – Manufactured, heat-treated, hardened, chromed and certified per government drawings.
Carrier – 8620 material, heat-treated and case hardened. Manufacturing tolerances on inside diameters tightly controlled. Nitromet QPQ processed for Rc55 surface hardness, durability and corrosion protection.
Gas Key – Hardened to USGI Specifications and attached using grade 8 hardened fasteners. NiB-X coated. Staked per military specifications.
Cam Pin – Manufactured, heat treated, hardened and certified per Government drawings. NiB-X coated.
Weight:1.17 lbs

What is Nitromet QPQ?

NITROMET™ SALT BATH NITRIDING MAXIMIZES RESISTANCE AGAINST CORROSION AND WEAR

Salt bath nitrocarburizing (SBN) is a popular alternative to hard chromium and physical vapor deposition (PVD). More effective
than hard chromium, SBN is extremely economical, with an array of well-documented benefits.

COST-EFFECTIVE HIGH PERFORMANCE COATING

Enhanced wear resistance
Increased corrosion resistance
Improved case hardness (extends wear surface)
Multiplied fatigue strength
Higher lubricity

Nitromet is a proprietary KC Jones trademark, originally developed by Kolene Corporation. Nitromet enhances the properties of SBN to provide optimal protection against corrosion and wear.

Nitromet Salt Bath Nitriding Available exclusively from KC Jones

Plating Engineered for enhanced wear and corrosion resistance : Choose from 2 finishes:
Standard – Quench Polish Quench® (QPQ), Uniform black finish, Deep, rich, black color, Case hardening, Conforms to materials standard ASTM 2753C, Surface hardness = 56 HRC (minimum)

Salt bath nitriding is sometimes referred to as ferritic nitrocarburizing, as well as salt bath nitrocarburizing. It is a process that involves thermo chemical diffusion, where a compound layer of carbon and nitrogen is simultaneously introduced to the surface of ferrous metal parts. A variety of metals can be treated with salt bath nitriding, including carbon steel, stainless steel, and sintered and cast iron parts.

Primary Nitromet Salt Bath Nitriding Characteristics

Deep black finish Anti-seizing properties
Improved sliding
Uniform black color
Doubled bending fatigue
Doubled rotary bend strength
Zero galling (often associated with plated surfaces)

Nitromet salt bath nitriding is an economic way to increase resistance against corrosion and wear. This is true whether you seek a hard chrome replacement or a more economical solution.

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MDT SKELETON CARBINE STOCK | PRS ALTERNATIVE

by Donald Sullivan | Nov 24, 2017 | Stocks | 1 comment

MDT SKELETON CARBINE STOCK | PRS ALTERNATIVE

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MDT SKELETON CARBINE STOCK

Modular Driven Technologies aka “MDT” is well know for being a leader on bolt action rifle chassis particularly their TAC21. MDT is also the rifle chassis provider for Brownells, Winchester, Weatherby and Mossberg to name a few. Many shooters may not realize that MDT also offers a skeletonized carbine stock that with proper buffer system hardware can also be used with the AR-15, AR-10 and 308 AR rifles (See the chart below). The MDT “SCS” is a great Magpul PRS alternative. Available in black or FDE.

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MDT SKELETON CARBINE STOCK With CHEEK RISER

For about thirty dollars more than the standard MDT Skeleton Stock there is an upgraded version of the carbine stock the includes and adjustable cheek riser.

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MDT SKELETON CARBINE STOCK

The MDT SKELETON CARBINE STOCK has been designed to allow maximum adjustability while minimizing weight. The adjustability allows each shooter to optimize superior ergonomics for multiple shooting positions. The weight has been minimized by skeletonization while retaining the strength of the stock. The SKELETON CARBINE STOCK is crafted in 6061 aluminum with Cerakote®.

The SCS without the cheekpiece weighs 1.43-1.48lbs depending on the length of the buffer tube used and without spacers.

The SCS has 3 QD attachment points (one on each side and one on the bottom) to allow the shooter multiple choices for carrying. The SCS also has provision on the bottom of the stock to allow for the attachment of a picatinny rail.

The user is able to finely adjust the LOP by using the wheel mechanism located on the body of the SCS. LOP can be locked into position by tightening the lower bolt. The angle of the SCS can also be adjusted by loosening the top two screws on the body. This allows the body to align with the buffer tube by using the scribe mark down the buffer tube and the offset scribe mark on the SCS body.

A soft foam guard has been placed on the SCS to allow for use with low optics. This foam guard provides comfort against the elements. The foam guards position is able to be adjusted by moving it horizontally along the buffer tube.

The buttpad on the SCS can be adjusted horizontally, vertically, and angularly. By loosening the setscrew on the rear portion of the buttpad, the buttpad can be adjusted vertically. Once the buttpad has been moved up, two screws will be revealed. To adjust the angle of the buttpad, or move it in the horizontal plane, these screws must be loosened.

The SCS must be used with a custom MDT buffer tube and standard castle nut. This MDT buffer tube has a scribe mark down the center to allow the shooter to zero the angle of the SCS if they wish. On the body of the SCS there is another machined marking to further allow the shooter to precisely angle their stock to suit their needs.

MDT Skeleton Carbine Stock Length of Pull Graph

MDT offers various buffer tubes lengths to allow shooters to choose their Length of Pull. To use these buffer tubes with AR-15 and AR-10 buffer systems, one or more spacers will be included with your purchase.

When using the 8.75” long SCS, an AR15 carbine buffer tube system can be used as it has the internal length of an AR-15 carbine buffer tube. AR-10 carbine buffer tube systems and AR-10/AR15 rifle buffer tube systems are not compatible.
When using the 9.75” or 10.75” long SCS, an AR-10 Carbine Buffer Tube System can be used, as it has the same internal length as an AR-10 Carbine Buffer Tube. An AR-15 carbine buffer tube system can be used with the use of a .625” spacer inserted into the buffer tube.
When using the 11.75” long SCS, an AR-15/AR-10 Rifle Buffer Tube System can be used, as it has the same internal length as an AR15/AR10 Rifle Buffer Tube. An AR-15 carbine buffer tube system can be used with the 2.3” spacer. An AR10 Carbine Buffer Tube System can be used with the 1.7” spacer inserted into the buffer tube.

The buffer tube comes in various lengths to allow for proper Length Of Pull (LOP) for any rifle, while maintaining the correct internal length for an AR-15 buffer system.

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FAXON FIREARMS BIG GUNNER PROFILE 308 AR DROP-IN BARREL

by Donald Sullivan | Oct 8, 2017 | Faxon Firearms, 308 AR Barrels | 0 comments

FAXON FIREARMS BIG GUNNER PROFILE 308 AR DROP-IN BARREL

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FAXON FIREARMS BIG GUNNER PROFILE 308 AR BARREL .308 Winchester

The Faxon Firearms Big Gunner .308 Win. Barrel’s profile is a marriage of Faxon’s Government and Pencil profiles that gives balance of manageable weight and high accuracy potential. It has the Government taper from the barrel extension to the gas block, then transitions to a Pencil profile from the block to the muzzle. Keeping weight at the rear maximizes rigidity and resistance to heat distortion, while removing it up front moves the center of gravity to the rear, keeping your “AR-308” nicely maneuverable.

Each Big Gunner .308 Win. barrel is machined from triple stress-relieved 416R stainless steel, and finished it with a tough, wear-resistant matte black QPQ Nitride finish.

Fits DPMS LR-308 Gen1 pattern upper receiver OR Armalite AR-10 upper when used with Faxon Bolt Carrier Group (not included)
5R rifling with 1-10″ twist ensures both accuracy & easy of cleaning
11° target crowned muzzle
5/8″-24 threaded muzzle
Each barrel individually checked for headspace with custom gauges

Faxon Big Gunner .308 Win. Barrels are available in 16″ length drilled for a mid-length gas tube, as well as 18″ and 20″ lengths drilled for a standard rifle gas tube.

Gun Tech Note: These barrels are chambered for .308 Winchester. 7.62×51 NATO ammo requires deeper head spacing but will normally will fit the chamber and function. However, Faxon does not guarantee the function of 7.62×51 ammunition, particularly with tight, “mach” .308 Win headspacing.

Visit Faxon Firearms

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FOSTECH ECHO AR-II TRIGGER | DROP-IN TRIGGER

by Donald Sullivan | Aug 27, 2017 | Trigger | 1 comment

FOSTECH ECHO AR-II TRIGGER | DROP-IN TRIGGER

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FOSTECH ECHO AR-II TRIGGER

Based on a Hiperfire trigger the Echo Trigger has a unique feature that allows an AR to fire when the trigger is pulled and also when released. This translate into much more expensive trips to the gun range. My two initial observations are the trigger is quite expensive and also looks to be pretty complex. At this time I cannot confirm how this trigger functions in a 308 AR or AR-10. If anyone has any experience with the echo trigger drop us a line. The Fostech Echo AR-II Trigger is in stock and available from Brownells.

The Echo AR-II Trigger allows the shooter to select from 3 different settings.

Safe Mode: Firearm will not fire.
Semi-Automatic Mode: Firearm fires when trigger is pulled.
Echo Mode: Firearm fires when trigger is pulled and also when trigger is released.

The Echo AR-II Trigger is designed with safety being the utmost priority. When the shooter is in the Echo Mode and depresses the trigger one round is fired, if the target moves, the shooter can move the selector to the safe position and a second round will not fire upon release.

The ECHO AR-II TRIGGER has SEVERAL DISTINCT FEATURES

PATENTED Design that gained ATF Approval (Patent # US 8,820,211 B1)
Technology licensed through HIPERFIRE inside the Echo Trigger
Light, clean, and crisp pull in Semi-Automatic Mode
The Echo AR-II Trigger is packed full of cutting edge technology
Reliable function in Echo Mode .

The Echo AR-II Trigger is for many of the AR-15 platforms but not all. The Echo AR-II Trigger NO LONGER comes with a stripped carrier with gas key. Customers made it very clear that they did not want to deal with a proprietary carrier. FosTecH’s team of engineers developed the Echo AR-II so that it did not need that proprietary carrier. If you have any questions about the Echo-AR-II trigger please go to www.echoquestions.com You can also call our office if you would like to talk to someone in person at 812-445-4028

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MAGPUL PRS GEN 3 STOCK | MAGPUL PRECISION RIFLE STOCK

by Donald Sullivan | Aug 13, 2017 | Stocks | 2 comments

MAGPUL PRS GEN 3 STOCK | MAGPUL PRECISION RIFLE STOCK

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MAGPUL PRS GEN 3 STOCK

The Magpul PRS GEN 3 stock is a field precision rifle stock for 308 AR, AR308 and AR-10 platforms, featuring tool-less length of pull and cheek piece height adjustment.

With solid adjustments for length of pull and cheek piece height via aluminum detent knobs, the PRS GEN 3 (Precision Rifle/Sniper) stock provides a stable interface and is intended for semi-automatic sniper or varmint type rifles. Offering a nearly universal fit, it is optimized for rifle-length receiver extensions but will also mount to many mil-spec carbine and A5-length tubes*. Includes a cant/height-adjustable rubber butt-pad and rotation-limiting QD sling swivel cups as well as M-LOK® slots on the bottom for rear monopod mounting. Made in U.S.A. Visit Magpul.

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Magpul PRS Gen 3 Stock Precision Rifle Stock Features

Mounts to rifle-length receiver extension tube without A2 spacer but will also accommodate mil-spec sized M4 Carbine and many A5-length tubes with standard Castle Nuts and End Plates (not included)*
Enhanced strength butt-plate withstands severe impact and recoil up to .50 BMG
Rubber butt-pad provides positive shoulder purchase to prevent slippage and is adjustable for both cant and height
Machined aluminum LOP and Cheek Piece adjustment knobs with positive locking click detents
Steel adjustment shafts finished with Melonite® for wear and corrosion resistance
All aluminum components finished with MIL-A-8625F, Type III, Class 2 hard anodizing
Bottom M-LOK slots provide additional sling mounting possibilities or for attaching 1913 Picatinny rails for use with a monopod
Sling Mounts
- Front/Rear – rotation-limited QD sling swivel mounts (swivels not included)
- Rear – 1.25″ aluminum sling loop (left-right reversible)

*NOTE: Due to the wide variety of designs and dimensions of carbine receiver extensions as well as the associated mounting hardware, proper fit cannot be guaranteed. Mounting to a rifle-length receiver extension is recommended to ensure optimal fit and function.

Magpul PRS Gen 3 Stock Precision Rifle Stock Specifications

Weight: 27.8 oz.
Weight, w/rifle receiver extension: 31.2 oz.
Weight, w/carbine receiver extension: 31.7 oz.
Length, max: 11.5-12.9 in.
LOP Adjustment Range: 1.4 in.
LOP, M16 Collapsed: ~14.3 in.
LOP, M16 Extended: ~15.7 in.
Cheek Height Adjustment Range: 0.8 in.

* Specifications based on factory configuration.

Magpul PRS GEN 3 Installation Instructions

[pdf-embedder url=”https://308ar.com/wp-content/uploads/2017/06/Magpul-PRS-GEN-3-Installation-Instructions.pdf” title=”Magpul PRS GEN 3 Installation Instructions”]

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