MSR Bolts & Parts

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’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...

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...

M10X firing pin assembly for the M10X Series. Durable stainless steel firing pin. Manufactured in the USA Material: Stainless Steel Length: 3.7” x .25” .15” (94.3mm x 6.4mm x 4mm) Weight:  .2oz (6g)

A2 Tool Steel Pin Replacements for the stock low grade steel pins that have a tendency to wear quickly. These A2 Tool Steel Pins we're designed to last a Lifetime! Custom CNC Machined Ruger PC Carbine Accessories designed to prevent Ruger PC Carbine...

Ruger PC Carbine Exact Edge Extractor will fix common Ruger PC Carbine Problems with Failure to Extract Malfunctions from the Factory Stamped Metal Extractor. M*CARBO specializes in Custom Ruger PC Carbine Accessories to Improve Performance and Function...

The Sylvan Arms Silent Capture Bolt Extension is hollowed out allowing you to run silent capture buffer spring systems with our Gen 3. Folding Stock Adapter. Designed for a 5/8 (.625) in. ID Bolt Carrier. Make sure that this will fit your configuration...