Battle Arms Development Carbine Buffer Assembly AR-15/M16 Standard Weight 3 oz. Is Your Stock Not Cycling & Unreliable? Is Your Carbine Not Cycling & Unreliable? The BAD AR-15/M16 Carbine Buffer Assembly provides reliable performance for AR-15/M16 Carbines with Mil Spec buffer springs & spring retainer? If so you need to replace your buffer. This five pound buffer assembly features enclosed non-metallic construction. Open cell sponge material encased in the batter makes it highly unlikely for this product to catch on fire. Replaceable non-metallic nylon spring is highly vibration resistant and in most cases does not require disassembling the rifle to replace the spring. This material will not rust deform or otherwise harm the surface of your receiver which aids in long term firearms durability. Specifications for Battle Arms Development AR-15/M16 Carbine Buffer Assembly: Manufacturer: Battle Arms Development Color: Silver Gun Model: M16 AR-15 Gun Type: Rifle Package Contents: Battle Arms Development AR-15/M16 Carbine Buffer Assembly What firearm models does the manufacturer say Battle Arms Development AR-15/M16 Carbine Buffer Assembly is compatible with? The manufacturer says that Battle Arms Development AR-15/M16 Carbine Buffer Assembly is compatible with AR-15 M16Battle Arms Development AR15-BUFFER-C: Carbine Buffer Assembly AR-15/M16 Standard Weight 3 oz