Barrel install tool

[GMinor]

I have had only one barrel that was so tight I could not push it in with my hands, but that one did require putting the barrel in the freezer and heating the receiver with a heat gun. It went in easily and came out just as easily putting heat to the receiver again when I changed my mind. Other than that, snug barrels usually only require putting the muzzle down on something padded on the floor and pushing the receiver down.

I had to bust out a mallet to get my barrel seated fully... Mega HD Billet Upper, PF bartlein Barrel.