Before placing the Gas Cylinder on
the Barrel, reassemble the Stacking Swivel. First
- place the Stacking Swivel so it straddles the
hole cut for it in the Gas Cylinder.
Then insert the Stacking
Swivel Screw from the right hand side of the Gas
Next, tighten the screw
by turning it clockwise until it is quite firmly
secured in place. Some people will peen the end
of the screw for added security but we do not.
Since the front
sight is already on (see the sight reassembly section
on this website) prepare to place the Gas Cylinder
on the barrel.