Tapco AR-15 5.4oz Heavy Buffer 9mm Luger. Weighing 5.4 ounces this buffer is meticulously crafted from durable steel. Designed specifically for 9mm buffer tubes and gas systems the increased weight effectively reduces bolt bounce and felt recoil for smoother cycling. Engineered to Mil-Spec dimensions and compatible with a wide range of 9mm AR-15 platforms this buffer ensures consistent and reliable operation in any scenario. Specifications for Tapco AR-15 5.4oz Heavy Buffer: Manufacturer: Tapco Finish: Anodized Fabric/Material: Steel Gun Make: AR Platform Gun Model: AR-15 Weight: 5.4 oz Buffer Tube Size: Mil-Spec Tapco TAP22056 9mm Steel AR Platform What firearm models does the manufacturer say Tapco AR-15 5.4oz Heavy Buffer is compatible with? The manufacturer says that Tapco AR-15 5.4oz Heavy Buffer is compatible with AR-15Tapco TAP22056: AR-15 5.4oz Heavy Buffer 9mm Luger