DPM Upgraded Recoil Spring AR-15 .308/7.62 Stainless RBA/AR-15 308. The system produces advanced recoil reduction by gradually slowing down the bolt carrier before stopping in the bottom the tube. Included also are 2 extra buffer springs 2 counterweight springs and an extra heavier counterweight. The users can fine tune the rifle circle and the recoil and further to secure the correct bolt locking. Specifications for DPM AR-15/AR-10 .308/7.62 Caliber Rifles MIL-SPEC Recoil Reduction Buffer Assembly: Manufacturer: DPM Color: Stainless Finish: Black Oxide Fabric/Material: Stainess Steel Gun Make: AR Platform Gun Model: AR-10 M16 AR-15 Caliber: 7.62x51mm NATO .308 Winchester Features of DPM AR-15/AR-10 .308/7.62 Caliber Rifles MIL-SPEC 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-15/AR-10 .308/7.62 Caliber Rifles MIL-SPEC Recoil Reduction Buffer Assembly What firearm models does the manufacturer say DPM AR-15/AR-10 .308/7.62 Caliber Rifles MIL-SPEC Recoil Reduction Buffer Assembly is compatible with? The manufacturer suggests that DPM AR-15/AR-10 .308/7.62 Caliber Rifles MIL-SPEC Recoil Reduction Buffer Assembly is compatible with AR-15 M16 AR-10DPM RBA/AR-15 308: Upgraded Recoil Spring AR-15 .308/7.62 Stainless