Sniper AR-15 Rifle Recoil Buffer Spring Steel Metal. g. A2 Fixed Stock. Not suitable for Mil-Spec Commercial or Pistol buffer tubes. Specifications for Sniper AR-15 Rifle Recoil Buffer Springs: Manufacturer: Sniper Color: Metal Fabric/Material: Steel Gun Model: AR-15 Gun Type: Rifle Package Contents: Sniper AR-15 Rifle Recoil Buffer Spring What firearm models does the manufacturer say Sniper AR-15 Rifle Recoil Buffer Springs is compatible with? The manufacturer suggests that Sniper AR-15 Rifle Recoil Buffer Springs is compatible with AR-15Sniper ABTS02: AR-15 Rifle Recoil Buffer Spring Steel Metal