Dark Storm Industries DS-15 H2 Carbine Length Buffer 4.5 oz. 5 oz. These AR15 Recoil Buffers by Dark Storm Industries are machined from 416 stainless steel for optimal strength and they're filled with 4140 steel dead blow weights. This Dark Storm Industries DS-15 H2 3.3in Carbine Length Buffer features a high durometer polyurethane bumper as well. Create a more reliable shooting experience with the Dark Storm Industries DSI DS-15 4.5 oz AR-15 Carbine Length Buffer H2. Specifications for Dark Storm Industries DS-15 H2 Carbine Length Buffer 4.5 oz: Manufacturer: Dark Storm Industries Color: Silver Fabric/Material: Stainless Steel Gun Model: AR-15 Gas System Length: Carbine Length Length: 3.3 in Weight: 4.5 oz Condition: New Features: 416 Stainless Steel Machined Body High Durometer Blue Polyurethane Bumper 4140 Steel Dead Blow Weights EPDM Weight Spacers Stainless Steel Roll Pin Engraved Face Showing Weight For carbine length buffer systems Also known as an inH2in buffer Package Contents: Dark Storm Industries DS-15 H2 Carbine Length Buffer 4.5 oz What firearm models does the manufacturer say Dark Storm Industries DS-15 H2 Carbine Length Buffer 4.5 oz is compatible with? The manufacturer says that Dark Storm Industries DS-15 H2 Carbine Length Buffer 4.5 oz is compatible with AR-15Dark Storm Industries DSI-BFR-C556H: DS-15 H2 Carbine Length Buffer 4.5 oz