MSR Parts

This high quality bolt carrier group is a valuable addition to your AR15 build. Features: M16-cut carrier Machined from 8620 steel Carrier has forward assist serrations Mil-Spec phosphate coating Properly staked gas key Chrome lined gas key and bolt...

The AR15 Rifle Buffer Kit is the perfect complement to your build. This kit features mil-spec components that are manufactured in the USA. Includes: 6061-T6 Aluminum Rifle Buffer Tube AR15 Rifle Buffer AR15 Rifle Buffer Spring Made in the USA

Stainless Steel Gas Tube for AR15 & AR10 rifles Features Roll pin included Rifle length:15.125" Made in the USA Specifications Made In America Platform: Multi Weight: Rifle - 0.96 oz

ALG AK recoil spring is a one of a kind design, it is manufactured from chrome silicon steel resist impact shock and relaxation. The 2 to 3 dead coils in the center change the natural frequency of the spring, which prevents harmonics from damaging the...

The Arisaka Vertical Grip is a robust, minimal grip for M-LOK handguards. It features a radiused profile at the top which tapers to meet the mounting surface on the handguard, giving a low-profile feel and ergonomic comfort. Twin mounting screws ensure...

The Rhino R-23™ tactical magwell grip and funnel is designed to significantly improve magazine reload speed and firearm handling. The Rhino™ reduces magazines change times on average by 48% and without ever having to take your eyes off your...

The Bravo Stock, our compact, lightest, and strongest buttstock paired with our ever-popular P-Grip 23, Grip Plug, and M-LOK Vertical Grip. In Coyote Brown, this kit is sure to enhance the look of your firearm and is only available for a limited time...

The Bravo Stock, our compact, lightest, and strongest buttstock paired with our ever-popular P-Grip 22, and M-LOK Vertical Grip. Dipped in Flecktarn Camo this pairing is sure to enhance the look of your firearm and is only available for a limited time...

The Bravo Stock, our compact, lightest, and strongest buttstock paired with our ever-popular P-Grip 23, and M-LOK Vertical Grip. Dipped in Flecktarn Camo this pairing is sure to enhance the look of your firearm and is only available for a limited time...

The Enhanced SOPMOD Stock, our compact, lightest, and strongest buttstock paired with our ever-popular P-Grip 22, and M-LOK Vertical Grip. Dipped in Flecktarn Camo this pairing is sure to enhance the look of your firearm and is only available for a...

Building upon the success of the B5 Systems Enhanced SOPMOD, B5 has taken the features end users demand; offering them in a lighter, more compact, and stronger buttstock. The Bravo stock maintains the SOPMOD cheek weld, one piece anti-rotation quick...

Building upon the success of the B5 Systems Enhanced SOPMOD, B5 has taken the features end users demand; offering them in a lighter, more compact, and stronger buttstock. The Bravo stock maintains the SOPMOD cheek weld, one piece anti-rotation quick...

Building upon the success of the B5 Systems Enhanced SOPMOD, B5 has taken the features end users demand; offering them in a lighter, more compact, and stronger buttstock. The Bravo stock maintains the SOPMOD cheek weld, one piece anti-rotation quick...

Building upon the success of the B5 Systems Enhanced SOPMOD, B5 has taken the features end users demand; offering them in a lighter, more compact, and stronger buttstock. The Bravo stock maintains the SOPMOD cheek weld, one piece anti-rotation quick...

The B5 Systems Collapsible Precision Stock (CPS), Long. Building upon the venerable cheek profile of the B5 SOPMOD and Bravo stocks, the Precision stock incorporates an adjustable cheekpiece and buttpad while fitting Mil-Spec carbine receiver extensions...

The B5 Systems Collapsible Precision Stock (CPS), Medium. Building upon the venerable cheek profile of the B5 SOPMOD and Bravo stocks, the Precision stock incorporates an adjustable cheekpiece and buttpad while fitting Mil-Spec carbine receiver...

B5 Systems has taken the venerable design of the Crane NSWC designed SOPMOD buttstock and incorporated the features sought by military professionals and firearm enthusiasts. The Enhanced SOPMOD features color matched steel hardware, one piece...

B5 Systems has taken the venerable design of the Crane NSWC designed SOPMOD buttstock and incorporated the features sought by military professionals and firearm enthusiasts. The Enhanced SOPMOD features color matched steel hardware, one piece...

Building upon the success of the B5 Systems Enhanced SOPMOD, B5 has taken the features end users demand; offering them in a lighter, more compact, and stronger buttstock. The Bravo stock maintains the SOPMOD cheek weld, one piece anti-rotation quick...

The B5 Systems Type 23 P-Grip offers an increased vertical grip angle and extended tang to improve ergonomics and ensure proper trigger index. Features 13° Angle For Improved Ergonomics Aggressive Texture for Increased Retention Accepts B5 Systems...

The B5 Systems Type 23 P-Grip offers an increased vertical grip angle and extended tang to improve ergonomics and ensure proper trigger index. Features 13° Angle For Improved Ergonomics Aggressive Texture for Increased Retention Accepts B5 Systems...

The B5 Systems Type 23 P-Grip offers an increased vertical grip angle and extended tang to improve ergonomics and ensure proper trigger index. Features 13° Angle For Improved Ergonomics Aggressive Texture for Increased Retention Accepts B5 Systems...

The B5 Systems Type 23 P-Grip offers an increased vertical grip angle and extended tang to improve ergonomics and ensure proper trigger index. Features 13° Angle For Improved Ergonomics Aggressive Texture for Increased Retention Accepts B5 Systems...

Featuring the same industry leading barrel nut and lock up design as originally introduced on BCM's evolutionary KMR handguard, the MCMR Series of handguards gives the shooter modularity in the M-LOK® platform. This proprietary patented mounting...

BoreBuddy Adjustable Bolt Weight (Gen 4) Gen 4 is here! It’s everything Gen 3 was, but much more robust and features tool less internal weight adjustment! Our 22lr AR bolt weight system reduces bolt velocity, delaying case ejection and reducing the...

BoreBuddy AR22 Barrel Specs Introducing BoreBuddy Apogee barrels — a premium 41v50 AR22 barrel. All barrels come with a matching thread protector. Our Apogee barrel line features 41v50 steel, button rifled, stress relieved, and air gauged with a...

BoreBuddy Match AR22 Barrel Specs Introducing BoreBuddy Apogee Match barrels — a premium black nitride AR22 barrel at a price lower than any other match AR22 barrel! Our Apogee barrel line are made from premium steels, and are button rifled, stress...

The BoreBuddy bolt buffer prevents the bolt from slamming into the backplate when the rifle is fired. This reduces the noise generated by the cycling of the bolt and reduces wear and tear to the bolt and the lower receiver. When shooting suppressed, a...

BoreBuddy’s bolt group is upgraded by default! These come with a Gen 2 collar, Gen 2 quiet collar, or a chamber adapter, a hardened round firing pin, a hardened extractor, and a 6lb recoil spring. No need to swap parts in the bolt for reliability,...

These parts put pressure against the back of the 22lr bolt carrier group and increase the reliability of both conversions and dedicated 22lr uppers. Designed to fit rifles and conversion kits with a CMMG/Atchisson/Ciener style bolt. These parts provide...

Turned on a precision Swiss lathe from carefully selected high strength steel and then heat treated to our proprietary specifications. The back of the pin is profiled to center the hammer impact for longer firing pin life as well as reduced chance of out...

The BoreBuddy Hardened Power Extractor kit increases extraction reliability. Each kit contains 1 extractor, 1 extractor pin and 2 springs (one of each power level). Designed to fit rifles and conversion kits with a Borebuddy/CMMG/RTB/PSA style bolt. The...

The BoreBuddy Recoil springs are available in the following weights: 3lb (Light – BLUE) 4lb (Medium – YELLOW) 6lb (Heavy – RED) Stock springs vary in strength, but generally are between 4 and 5lb in recent production bolts. These...

1x Pressure Plug, 1x Charging Handle Insert, 2x Firing Pin Spring, 2x Power Extractor Spring (one of each force level), 1x Bolt Buffer (extras are available in a 3-pack here) For best buffer life, a bolt weight must be used. Designed to fit dedicated...

Low-profile length for increased mobility and decreased snag factor. The forward angle increases the rigidity of the forearm, while providing a more natural wrist angle. Can be mounted in reverse angle to increase control when grabbing handguard and...

Brownells expands our lineup of quality AR parts with the classic A2 rifle stock. The A2 buttstock is foam filled, and has the door assembly, buttplate assembly, and swivel assembly. It does not include a buffer tube, buttcap spacer, or A2 buttstock...

Recreate an American Classic with the Brownells M16A1 Pistol Grip, built to accurately replicate the original Grip issued to thousands of American servicemen & women. This Pistol Grip is modeled directly off of original grips, which are becoming...

The ESD Enhanced Foregrip or EFG for short was designed to ease end-users’ ability to control their rifle, mitigate recoil, and have faster, more accurate follow-through. From the angle of the EFG to the width, it’s made with a human-centered...

The ESD Enhanced Foregrip or EFG for short was designed to ease end-users’ ability to control their rifle, mitigate recoil, and have faster, more accurate follow-through. From the angle of the EFG to the width, it’s made with a human-centered...

Mounts flush to M-LOK slots 6061-T6 aluminum