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to provide a fast, secure, and enjoyable experience. by Perlie Joson, from WY, United States Asked on June 20, 2022
The Faxon Firearms 5.56 NATO Gunner Rifle Barrels will work with Mil-Spec AR15 upper receivers. So if you have a rifle with a 16" 5.56 barrel you can replace it with the 20" Faxon Firearms 5.56 NATO Gunner Rifle Barrel. You will also need a longer gas tube and maybe a different gas block depending on the on you are using currently.
