I found a real weired M1icon I was working on for a VFW. I had the blank adaptor on the gun, and was firing blanks. I tried everything. It wouldn't pick up the next round after I fired it. To make a long story short the front handguard was sanded at the rear about 1/16th short. When you put it on and then put it all together the hole in the barrel did not match up with the hole in the gas cylinder. This one cost me alittle time. I hope this helps someone else. Rog
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