308AR BOLT CATCH SCREW BOLT CATCH PIN

308AR BOLT CATCH SCREW BOLT CATCH PIN

Picture of a 308 AR Bolt Catch Screw Bolt Catch Pin

308 AR BOLT CATCH SCREW and BOLT CATCH PIN

Early on at 308ar.com we did a page that referenced the the point that the Armalite AR-10 utilized a BOLT CATCH ROLL PIN same as the Armalite M-15 (AR15) rifle while the DPMS LR-308 308 AR and similar rifles utilize a BOLT CATCH SCREW. Well despite that page we still get many questions about this small part. Based on these messages I decided a simple picture might be easier to understand in this day of sort attention spans. While I believe there are a small minority of 308 AR manufacturers using BOLT CATCH ROLL PINS just as there is an AR-15 manufacturer or two have adopted the BOLT CATCH SCREW feature. This post is meant to make folks aware of the differences.

 

308 AR BOLT CATCH SCREW SOURCES

  • DMPS LR-308 BOLT CATCH SCREW
  • AERO PRECISION BOLT CATCH SCREW – Aero Precision refers to this part as the M5 Threaded Roll PinOur threaded roll pin is used in multiple applications, including for the bolt catch on our M5 Lower Receivers and for the forward assist on our Upper Receivers. Made from stainless steel, it has a 6-32 thread pitch and is designed to be installed with a 1/16″ Hex Key Wrench.Note: This product is already included with our M4E1/M5E1 Enhanced Uppers, M4E1 Threaded Uppers, M5 Upper Receiver and our M5 Lower Receiver. It is not necessary to be purchased separately. This individual product is available for customers who have lost or damaged their existing threaded roll pin.

    Works With:

    • M4E1 Enhanced Upper Receivers
    • M4E1 Threaded Upper Receivers
    • M5 Upper Receivers
    • M5E1 Upper Receivers
    • DOES NOT work with our M4E1 Lower Receiver
    • DOES NOT work with a standard AR15 Lower Receiver
  • FALKOR DEFENSE (SI DEFENSE) BOLT CATCH SCREW

At this point I cannot definitively state what 308 AR rifle manufacturers use the threaded BOLT CATCH SCREW or the BOLT CATCH ROLL PIN. Feel free to contact us and let us know whether your lower utilizes a BOLT CATCH SCREW or BOLT CATCH ROLL PIN


308 AR AR-10 Manufacturers who utilize a BOLT CATCH ROLL PIN

  • ARMALITE
  • SUN DEVIL

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FORTIS SWITCH 308 HANDGUARD

FORTIS SWITCH 308 HANDGUARD

FORTIS SWITCH 308 HANDGUARD

 

FORTIS SWITCH 308 HANDGUARD – Fortis Manufacturing provides unmatched strength with exceptional design and aesthetics at a price you can afford. FMI uses only the highest quality materials available and precision machining with exacting quality control. A diverse group of select professional operators puts every product thru some of the most extreme testing and evaluation in the industry. A product is only considered ready for production when all issues have been resolved and addressed. This philosophy at Fortis ensures that each product or accessory they make will exceed the monstrous demands of the professionals who use them!

Fortis Switch Install Instructions

FORTIS SWITCH 308 HANDGUARD

FORTIS SWITCH 308 HANDGUARD

The FORTIS SWITCH 308 HANDGUARD Rail System is an innovative design from Fortis Manufacturing that gives you a distinct competitive advantage! The SWITCH is not only easy to install but also allows you to quickly remove and change rails. It features a tool less locking mechanism so you can change your rails and your setup on the fly to meet any conditions. This lightweight and robust free float handguard utilizes a 1 piece skeletonized body to maintain its strength and still shed weight. It has full length picatinny rail on top, with the versatility of key-mod at the 3, 6 and 9 o’clock positions. Anti rotation quick detach swivel sockets are integral to the design. Constructed of aircraft grade aluminum and hard coat anodized you know it will last the life of your DPMS High Profile .308 Platform rifle. It installs easily using a 4140 heat treated barrel nut with 1-7/16″x16 threads. Improve your speed and your accuracy. Put more shots on target, further down range. Bring the SWITCH to your next competition!

FORTIS SWITCH 308 HANDGUARD

FORTIS SWITCH 308 HANDGUARD

Specifications and Features:
Fortis Manufacturing SWITCH 308 Rail System SWITCH308-14
AR-10 Free Float Hand Guard
Tool-less Locking Mechanism
Continuous Top Picatinny Rails
Key-Mod Rails at 3 O’clock, 6 O’clock and 9 O’clock Positions
Anti-Rotation QD Attachment Points
Rail 6061-T6 Aircraft Grade Aluminum
Locking Handle Aircraft 7075-T6 Aluminum
Mil-Spec Type III Hard Coat Anodized Finish
Length 14.75″
Weight 10 Ounces
Inside Diameter 1.51″
Black

Fits:
For use with AR-10 Platform .308 Rifles.
DPMS High Profile .308 Platform
Uses 4140 Heat treated Barrel Nut 1-7/16″x16 TPI.
Barrel Nut Included

 


FORTIS SWITCH 308 HANDGUARD

Accu Shot Atlas Bipods

JL BILLET 308AR ANGLE CUT M LOK HANDGUARD

JL BILLET 308AR ANGLE CUT M LOK HANDGUARD 12" LOW PROFILE

JL BILLET 308AR ANGLE CUT M LOK

 

JL BILLET 308AR ANGLE CUT M LOK HANDGUARD 12″ LOW PROFILE DESCRIPTION

JL BILLET 308AR ANGLE CUT M LOK HANDGUARD – The continuous top rail allows you to mount iron sights, optics and any other accessories without additional rail sections. The Magpul M-Lok system allows users to customize the hand guard with rail sections and direct mount accessories. The hand guard is constructed of 6061-T6 aircraft aluminum and finished with an optional Mil-Spec type III hard coat black anodizing.

The MLA has a precision bore to fit the proprietary barrel nut which removes any unwanted play and ensures an exact fit!! Installation requires a 1-5/16″ crows foot wrench (not included) for the barrel nut; standard AR-10 barrel nut wrenches will not work with this hand guard system. These rails are some of the lightest you will find anywhere!

If you are looking for a unique look, light weight, and quality forend then this is it!

*DPMS Low Profile Rail Height*

  • Material: Hard Coat Anodized Aluminum Handguard, 7075-T6 Barrel Nut
  • Stainless Steel Key Seat
  • Precision Bore
  • 1913 Picatinny Continuous Top Rail
  • Accepts M-Lok Rail Sections & Accessories (2x 5 slot sections included)
  • Requires 1-5/16″ Crowfoot Wrench (not included)
  • Weight is 9.9oz. with barrel nut
  • Rails will ship in raw aluminum if Hard Black option is not selected
  • Rail length is measured along the top

Visit JL Billet for ordering information

JL BILLET 308AR ANGLE CUT M-LOK HANDGUARD INSTALLATION INSTRUCTIONS

JL BILLET 308AR ANGLE CUT M LOK HANDGUARD INSTALLATION INSTRUCTIONS

JL BILLET 308AR ANGLE CUT M LOK HANDGUARD INSTALLATION INSTRUCTIONS

1. Ensure weapon is clear and unloaded
2. Apply anti-seize to barrel nut threads
3. Torque barrel nut to 45 ft/lbs
4. Install hand guard over barrel nut and align with upper
There should be a slight drag between the two parts
5. Install key seat into slot and align the bolt holes
(The radius tab on the key seat should fit into the groove on the barrel nut)
6. Install the two 10/32 bolts and torque to 90 in/lbs
The key seat should be tight inside the slot and the hand guard should not rotate.


ADM Nitride Coated 308AR Barrels UC10

ADM Nitride Coated 308AR Barrels UC10 – American Defense Manufacturing (ADM) has added three Nitride Coated 308AR Barrels UC10 to their barrel offering. Currently they are available in 14.5″ and 16″ barrel lengths.

American Defense Manufacturing ADM Nitride Coated 308AR Barrels

American Defense Manufacturing ADM Nitride Coated 308AR Barrels

The 16” model 308AR barrels incorporate a Hybrid or Heavy Contour design. The American Defense Manufacturing  ADM Nitride Coated 308AR Barrels are manufactured to exacting standards by Criterion Barrels Inc. and are only available for purchase at American Defense Manufacturing.

UC10 Description

American Defense MFG .308 AR match grade barrels are designed for DPMS, Remington, Bushmaster, and FA pattern rifles. These barrels feature an M4 barrel extension and M118 LR match chamber compatible with both 7.62×51 NATO and .308 Win ammunition. Offered in a mid-weight Hybrid or Heavy contour, these barrels are manufactured from 416R Stainless Steel featuring a Nitride finish for corrosion resistance, reduced maintenance and enhanced accurate life. The barrel is hand lapped prior to finishing to provide the most consistent bore dimensions possible. Each of these barrels is dimpled for set screw .750 gas blocks. Chambers are finished, but barrels should be headspaced and installed by a qualified gunsmith.

  • AD-UIC10Barrel-308-14HYBRID 14.5″ 1-10 RH 5/8 x 24 .750 Mid-Length Hybrid
  • AD-UIC10Barrel-308-16HYBRID 16″ 1-10 RH 5/8 x 24 .750 Rifle Hybrid
  • AD-UIC10Barrel-308-16HEAVY 16″ 1-10 RH 5/8 x 24 .750 Rifle HBAR

 

ADM Nitride Coated 308AR Barrels UC10


Hiperfire Hipertouch Eclipse Trigger For 308AR AR-10

Hiperfire Hipertouch Eclipse Trigger 308AR.com AR-10

Hiperfire Hipertouch Eclipse Trigger

 

When it comes to advertising/sponsors relationships at 308AR.com and our family of sites and communities it’s no secret we are very selective with advertisers. Today we are excited to add Hiperfire to the list. Hiperfire offers AR15, 308AR and AR-10 triggers for most budgets $89-$275 and shooting disciplines. I had been planning to purchase a Hiperfire Hipertouch 24C but now Im feeling obligated to get the Hiperfire Hipertouch Eclipse Trigger ECL listed lower in the post.

Hiperfire Hipertouch Eclipse Trigger Specs

Hiperfire Hipertouch Eclipse Trigger Specs

 

Hiperfire Hipertouch Eclipse Trigger For 308AR AR-10 Video

Hiperfire Hipertouch Eclipse Trigger Description

Click the second thumbnail under PRODUCT PHOTOS (above right) to view a comparative feature summary of the HIPERTOUCH® trigger group family. Also, consult the Resource Center (RESOURCES navigation button) where you’ll find items like the Hiperfire Hipertouch Eclipse Trigger Troubleshooting Guide

HIPERTOUCH® 24, 24E, 243G, and 24C Specs Plus these Enhancements

  • Nickel Alloy Finish Applied to the Hammer and Trigger
  • Smoother Trigger Pull
  • Prolongs Useful Cycle Life
  • Can Be Easier To Clean
  • Sports a Black HIPERSHOE®
  • US Pat. Nos. 8,572,880, 9,052,149 and 9,175,917, Others Pending

The HIPERTOUCH® ECL4 is HIPERFIRE’s top-of-the-line trigger for AR-15® and AR-10® type rifles. The HIPERTOUCH® name is short for HIgh PERformance TOUCH, 24 for user adjustable trigger weights. The ECL was developed as part of a 3-gun promotion. But, one must realize that this and the other triggers aren’t just for 3-gun. It now sports a new evocative name since its performance eclipses that of even HIPERFIRE’s 24C. It installs and functions just like all the HIPERTOUCH® 24s. For installation and operational features of the HIPERTOUCH® family of AR fire-controls, go to the HIPERTOUCH® 24 page and watch the videos. View this graphic,Hiperfire AR-10 AR-15 Lower Cavity Dimensions. HIPERTOUCH® FCGs may not work in lowers with pivot holes that are outside the MIL-Spec dimensions shown in RED.

HIPERTOUCH® FCGs have uniquely solved two problems with stock AR triggers and AR trigger upgrades respectively: 1) High Trigger Weight, and 2) Low Hammer Fall Energy.

Trigger Weight: The real culprit behind high trigger pull weight is high sear impingement force that produces high friction. To get around that, the stock “AR” trigger and hammer mechanical advantage was changed and the toggle spring feature added to reduce the impingement force on the trigger sear. Designers of two-stage products changed the functional location of the primary sear; HIPERFIRE®’s design has not, retaining the stock design’s single-stage simplicity. This is important for when stock triggers are pulled, the hammer cam-action signals hammer fall is imminent. When 2-stage triggers are pulled, the final higher weight stage also signals hammer fall. This can lead to the flinching problem we all know about. Some like to say the better 2-stage triggers have glass rod or candy-cane like breaks to sell the idea that they don’t signal hammer fall. In any case, the HIPERTOUCH® ECL does not signal hammer fall because the trigger weight is constant over the entire stroke.

Hammer Fall Energy: HIPERTOUCH® features the unique toggle spring functionality that reduces trigger weight, but while doing so, it also increases hammer fall energy by over 35% over the MIL-spec stock design and every trigger upgrade in the market. This permits the shooter to ignite hard MIL and foreign primers as well as hard to ignite 22 rimfire ammunition.

HIPERTOUCH® FCGs retain Eugene Stoner’s design of simple elegance while remaining very robust, without the gritty feel. Shooting for high accuracy is no longer an almost impossible chore. It’s no longer necessary to improve the stock performance by manually polishing the high-friction trigger and hammer sear surfaces, where the end result was only marginally better anyway.

Ambitious sportsmen and marksmen have been turning to trigger upgrades with varying degrees of satisfaction. The better replacements have been one and two-stage triggers with fixed final weights ranging from between 2½ and 4½ pounds with what some have called a glass rod or candy cane trigger break. Some of these devices require factory or user calibration, maintenance, and/or replacement for wear or doubling. Some of these devices also employ reduced power springs, which have compromised reliable ignition for a “dream” trigger weight.

The HIPERFIRE® “AR” accessory response to those shooter’s looking for a single-stage and very much improved, match quality, “AR” trigger upgrade that delivers high performance is the HIPERTOUCH® ECL. It nests in unmodified standard AR-15® and AR-10® type lower receivers in the same way as stock “AR” triggers and hammers without having to remove the safety selector. It is comprised of three subassemblies: the trigger, hammer, and toggle, spring groups. All the parts are made from carbon steel alloys that have been hardened for wear and strength. It features exceptionally low trigger weights with smooth pre-travel, a very clean hammer release with no report to break, match action response, and faster hammer lock-up. Only now with HIPERTOUCH® trigger and hammer actions does “AR” trigger “squeeze” have real meaning.

Additionally, the HIPERTOUCH® ECL also sports the HIPERSHOE® adjustable finger pad as first introduced with the 24C, which can be positioned at five (5) different vertical detent locations along the straight trigger’s bow. By changing location, the shooter can further adjust pre-travel and weight within the broader spring range settings than without it as desired for even more trigger responsiveness. Also, the adjustable pad lengthens slightly the extension of the finger to the pad with respect to the pistol grip, which alters the feel and dexterity of the finger on the trigger for added comfort and/or control. The trigger can be installed and operated with and without the shoe.

Hiperfire Hipertouch Eclipse Trigger

 

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Drake TiTAN Titanium Barrel System

Drake TiTAN Titanium Barrel System

Drake TiTAN Titanium Barrel System

Drake TiTAN Titanium Barrel System

Drake TiTAN Titanium Barrel System

Drake TiTAN Titanium Barrel System – Our friend Chris Drake at Drake Associates just passed on this news release for your viewing pleasure. If your unfamiliar with Drake Associates and their line of rifles and chassis you just might recognize them as the folks behind the Remington XM-2010 and Remington MSR.

Drake Titanium Stalker

The Drake Titanium Stalker also features the lightweight, Drake TiTAN Titanium Barrel System. This precision rifle was designed as an alternative to the military’s M24E program, with a similar mission profile that features high performance options at an affordable price.

The Drake TiTAN Titanium Barrel System by Drake Associates is a HIGH PERFORMANCE, LIGHT WEIGHT, LONG RANGE PRECISION BARREL SYSTEM that is manufactured under a US patent-pending process that increases the strength and reduces barrel weight by as much as 45%. An important application for the TiTAN™ Barrel System is a upgrade and retrofit for US Military and US Law Enforcement sniper weapon systems, Civilian Tactical Shooters and Long Range Hunters precision rifles.

If you’re looking for a high performance barrel system, the TiTAN™ will not disappoint. With the weight of a sporter barrel in a titanium heavy profile contour, this barrel system is no match for carbon fiber wrapped barrels.

Drake Associates currently offers the Titanium Barrel System with the Hunter Stalker and Drake Stalker Rifle Systems. Also available to order for Remington and Savage Bolt Action rifle systems as well as AR15/AR10 and 308AR rifle systems.

Drake TiTAN Titanium Barrel System for AR-10/308AR Rifles