SMITH DEFENSE - AR-9/45 Carbine Buffer Tube Kit

Building a new AR-9 or AR-45? Fantastic. You'll need a buffer tube kit for that then. Instead of sourcing parts individually from separate places and worrying about parts compatibility, opt for this convenient AR-9/45 buffer tube kit from Smith Defense that has all the necessary parts you'll need to mount any mil-spec compatible stock to your AR-9 or AR-45 lower receiver. Please note that this buffer tube kit is specifically designed for the AR-9 and AR-45 platform as the buffer weight is 7.5 ounces and made to withstand and properly cycle the blowback action. Kit Includes: Mil-Spec 7075-T6 Aluminum 6-Position Carbine Receiver Extension Buffer Tube Buffer Assembly - 7.5oz Buffer Spring Steel Castle Nut Steel End Plate