The Firing Line Forums - View Single Post - M1 garand pictures and adjustable gas plug

P5 Guy · December 18, 2009, 01:23 PM

Has a spring loaded poppet that is held open by the grenade launching fixture. The launcher used a blank cartridge and wasn't meant to cycle the action.
I had one on a CMP M1 that didn't seal completely. I bought a new solid one and the cycling problem was gone.

December 18, 2009, 01:23 PM	#5
P5 Guy Senior Member Join Date: December 1, 2005 Location: Tampa Bay Posts: 1,804	Grenade Launching Plug Has a spring loaded poppet that is held open by the grenade launching fixture. The launcher used a blank cartridge and wasn't meant to cycle the action. I had one on a CMP M1 that didn't seal completely. I bought a new solid one and the cycling problem was gone.