Well, my search-fu sucks but I haven't seen this come up in any thing I've read here.
Problem is my light barrel semi-auto AR-15 will go full auto when I hold the trigger back. At first I thought - bad disconnector. Replaced it. Still had the problem. Okay, check gas rings - replaced them. Still doing it. Okay, maybe gas tube - replaced it. Still more than one shot per trigger squeeze. Replaced the buffer spring with a new one - compared it to the old spring. Longer by a couple of inches - okay worn buffer spring. Nope. Changed out the bolt carrier for a heavier one. Still cranking out more than one shot per trigger pull. Swapped out the lower with a new Rock River lower. no change.
BTW - doesn't matter what kind of load. Everything from M-193s to hand loads that never doubled before.
Ran out of ideas. Would like to keep this upper because it was pretty accurate - sub MOA at 100 yards and light. Any suggestions from the field?
Gunfighter
Problem is my light barrel semi-auto AR-15 will go full auto when I hold the trigger back. At first I thought - bad disconnector. Replaced it. Still had the problem. Okay, check gas rings - replaced them. Still doing it. Okay, maybe gas tube - replaced it. Still more than one shot per trigger squeeze. Replaced the buffer spring with a new one - compared it to the old spring. Longer by a couple of inches - okay worn buffer spring. Nope. Changed out the bolt carrier for a heavier one. Still cranking out more than one shot per trigger pull. Swapped out the lower with a new Rock River lower. no change.
BTW - doesn't matter what kind of load. Everything from M-193s to hand loads that never doubled before.
Ran out of ideas. Would like to keep this upper because it was pretty accurate - sub MOA at 100 yards and light. Any suggestions from the field?
Gunfighter