This complete Double threaded barreled upper comes with side EZ cocker and Integral machined rail for optics. Threaded in .45 acp, 7/8x9 & .578 x28 making it versatile for suppressors and muzzle brakes. The side cocker makes it easier to pull back the bolt and accommodates lots of room on top of the scope rail for your optics of choice. For use with a Mac-10 .45 acp, uses your bolt assembly. Please contact us if you have any questions. (other components sold separately) Threaded in 7/8x9 & .578 x28BACK ORDER ONLY
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