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9/22/2017 12:11:25 AM
Posted: 8/30/2003 3:20:04 PM EDT
My brother had a new Bushmaster 16" M4 barrel installed on his A1 upper that is on a pre-ban lower, and now every once an a while, I would say 20 rounds it will shoot a double... Could this be a slam fire? It didn't have any problems before, and it's not the ammo.

Trouble shooting suggestions welcome..

Link Posted: 8/30/2003 8:20:45 PM EDT
Link Posted: 8/30/2003 11:13:58 PM EDT
Dude,it's obviously a headspace problem. The project screams that. It sounds on the tight end. GG
Link Posted: 8/31/2003 12:18:26 AM EDT
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