Posted: 2/8/2026 1:33:27 PM EDT
I have a Colt LE6940P Piston Carbine that came from a police department. It's pretty dirty, so I want to clean it up. Unfortunately, I'm having trouble removing the gas piston. It appears to have a retaining pin that holds the assembly in place. It's marked A in the picture below. I tried tapping on the opposite side shown, but it doesn't budge. Additionally, there's a roll pin that appears like it would hold the assembly in place even if the retaining pin was removed. It's marked B in the picture below. This of course begs the question. Why would they have both a retaining pin to allow for disassembly and a roll pin to prevent it? What am I missing here?
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https://www.ar15.com/forums/ar-15/Colt_6940P__Piston_Parts_Pics/126-604811/ this old thread looks like it will help. |
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Originally Posted By Bret: So, do you think that I should just pound on it more aggressively with a punch? I shot it yesterday and it didn't have any function issues. It was also perfectly sighted in. Soak in Kroil overnight, then lightly tap with a punch and hammer. |