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Nope, upper/barrel only. Needs original Bolt, firing pin and tiny parts to function.

HI Jared, No it's just an add on for your MK 22 or .45 Tactical Solutions has the answer with the Pac Lite barrel. Engineered from lightweight aluminum with a steel liner, these barrels are easy to install with no gunsmithing required. They will improve both the balance and accuracy of your pistol and make you feel like a pro. The threaded barrels are equipped with adjustable sights and are drilled and tapped for Pac-Lite scope bases. The muzzle is a standard 1/2x28 thread for use with a suppressor, and a matching thread protector is provided. Specifications and Features 4.5" threaded barrel Threaded 1/2x28 with thread protector Aluminum with steel liner Improves balance and accuracy Adjustable sights Easy installation OD green It is just the Barrel and the sights. Here is whats in the box and how to install. https://www.youtube.com/watch?v=z2m3Wx8UlCE

Only the barrel assembly they replace the barrel on Ruger 22/45s and MKII series pistols. uses the original bolt pins and small parts.