DPM AR 9mm PCC Closed Bolt Carrier Recoil Reduction Buffer Assembly Stainless RBA/AR-15 9x19. The system produces advanced recoil reduction by gradually slowing down the bolt carrier before stopping in the bottom the tube. Included also 2 extra buffer springs 2 counterweight springs and an extra heavier counterweight. The shooters can fine tune the rifle circle and the recoil and further to secure the correct bolt locking. Specifications for DPM AR 9mm PCC Closed Bolt Carrier Recoil Reduction Buffer Assembly: Manufacturer: DPM Color: Stainless Finish: Black Oxide Fabric/Material: Stainess Steel Gun Make: AR Platform Gun Model: AR-15 Caliber: 9mm Luger Features of DPM AR 9mm PCC Closed Bolt Carrier Recoil Reduction Buffer Assembly Faster follow up shots Bolt and Frame Protection Elimination of jams Significant recoil reduction Better double-tap concentration Better control and greater accuracy Full User Adjustability Correct Locking Bolt Package Contents: DPM AR 9mm PCC Closed Bolt Carrier Recoil Reduction Buffer Assembly What firearm models does the manufacturer say DPM AR 9mm PCC Closed Bolt Carrier Recoil Reduction Buffer Assembly is compatible with? The manufacturer suggests that DPM AR 9mm PCC Closed Bolt Carrier Recoil Reduction Buffer Assembly is compatible with AR-15DPM RBA/AR-15 9x19: AR 9mm PCC Closed Bolt Carrier Recoil Reduction Buffer Assembly Stainless