NEMO Arms Signature Series 8-position Carbine Length Buffer Tube - Assembly. Specifications for NEMO Arms Signature Series 8-position Carbine Length Buffer Tube Assembly: Manufacturer: NEMO Arms Color: Black Finish: Matte Black Anodized Fabric/Material: 6061 Aluminum Gun Make: AR Platform Gun Model: AR-10 AR-15 Gun Type: Rifle Weight: 3.94 oz Features of NEMO Arms Signature Series 8-position Carbine Length Buffer Tube Assembly Buffer tube is billet machined from 6061 aluminum Aluminum castle nut and end plate made from billet aluminum 8 positions; .5-inch increments for overall adjustment of 3.5 inches Vented and chamfered smooth edges Package Contents: NEMO Arms Signature Series 8-position Carbine Length Buffer Tube Assembly What firearm models does the manufacturer say NEMO Arms Signature Series 8-position Carbine Length Buffer Tube Assembly is compatible with? The manufacturer says that NEMO Arms Signature Series 8-position Carbine Length Buffer Tube Assembly is compatible with AR-15 AR-10NEMO Arms NSP-BTA-C8: Signature Series 8-position Carbine Length Buffer Tube - Assembly