UTG Pro Six Position Mil-spec AR-15 Buffer Tube Kit - Black (Color: Black)

Complete UTG Buffer Assembly - Add Your Own Stock This receiver extension kit from UTG comes with a buffer tube, buffer spring, 3.0 oz carbine buffer, castle nut, and endplate. Whether you're upgrading an older rifle or starting fresh on a stripped lower, this kit allows you to customize your build with reliable, US-made components. [...]