Carefully designed and built from 10 individual components, the AR suppressor optimized buffer is a spring loaded, staggered impact, urethane buffered design. The reciprocal and non-reciprocal weights are similar to the A2 rifle length buffer. In conjunction with shock dampening brass weights, the AR-SOB offers increased system dwell time, reduced bolt speed, and enhanced chambering reliability. Through integration of a shorter platter of CNC machined weights and a telescoping buffer head, the AR-SOB has more controlled motion tolerances, allowing precisely controlled timing and forced sequential impact of buffer weights interacting with the rifles operating system. The AR-SOB weighs 4.9 ounces, and can be used in suppressed 5.56mm rifles as a replacement for the M4 carbine series buffers, and also in 308 carbines as a replacement for H2 and H3 buffers when used in conjunction with the AR10 mil-spec CAR receiver extension and AR10 CAR action spring. The buffer is one of the more overlooked components in most rifles. In the current market, cost constraints and a desire for rifles to run with cheap, underpowered, steel jacketed ammunition are driving forces for many firearms companies who are involved in what appears to be a constant race for the bottom. Most rifles are aggressively overgassed, and supplied with cheap, light CAR buffers which are employed to reduce system cost, robbing rifles of necessary weight for reliable chambering with fouled chambers, and encouraging premature unlocking of the bolt, causing undue extraction stress, contributing to operational failures and mechanical failures of critical system components. Suppressors further increase system operating speed and exacerbate the over-gassed condition. An AR-SOB will work to resolve these issues by allowing a carbine to run similarly to the original product improved, M-16A1 "Sturtevant" rifle length buffer, despite the reduced internal length of the CAR receiver extension. Specifications for Griffin Armament Suppressor Optimized Buffer: Manufacturer: Griffin Armament Color: Black Finish: Heat Treated Fabric/Material: 17-4 Stainless Steel Gun Model: AR-10, AR-15 Condition: New Weight: 4.9 oz Size: Small Features of Griffin Armament Suppressor Optimized Buffer The AR-SOB can be used in suppressed 5.56mm rifles as a replacement for the M4 carbine series buffers, and also in 308 carbines as a replacement for H2 and H3 buffers when used in conjunction with the AR10 mil-spec CAR receiver extension and AR10 CAR action spring Brass weights and nitrided treated Steel construction Custom Urethane buffer pads in key areas Staggered impact hybrid buffer design. Rifle buffer function in a CAR system size for unsurpassed reliability. AR10 CAR compatible when used with AR10 Car receiver extension and spring Package Contents: Griffin Armament Suppressor Optimized Buffer What firearm models does the manufacturer say Griffin Armament Suppressor Optimized Buffer is compatible with? The manufacturer says that Griffin Armament Suppressor Optimized Buffer is compatible with AR-15, AR-10