marksman13
Member
Quick question for the experts, but first let me set up the scenario.
I have a rifle. We’ll call it an AR-15 at the moment, but it is not chambered in 5.56. This rifle has only been run suppressed. It has always been run with quality, supersonic ammo. It has NEVER run reliably. When fired, the rifle will eject the spent casing pretty reliably, but fails to pick up the next round from the mag more often than not. Usually, the rifle will fire two consecutive rounds before failing to pick up the third round from the mag. This has been consistent across four brands of ammo and with Magpul and Hexmag magazines.
My initial impression was that the rifle was severely under gassed. I thought that the gas block was probably not properly aligned with the gas port and that was restricting gas flow. Normally when shooting suppressed the issue is over-gassing in my experience, which I have not observed affecting operation, only excessive wear and tear on the moving parts.
Could over-gassing be causing the issue I described above? Could it somehow be cycling to BCG so fast that it is not picking up a round from the magazine? As in, the action is cycling faster than the spring can push the next round to the top of the mag. Maybe the top round in the mag has enough spring tension behind it to keep it at the top of the mag, but the following rounds don’t? I’m completely spit-balling on this one and hoping some of you guys can help me out here.
I have a rifle. We’ll call it an AR-15 at the moment, but it is not chambered in 5.56. This rifle has only been run suppressed. It has always been run with quality, supersonic ammo. It has NEVER run reliably. When fired, the rifle will eject the spent casing pretty reliably, but fails to pick up the next round from the mag more often than not. Usually, the rifle will fire two consecutive rounds before failing to pick up the third round from the mag. This has been consistent across four brands of ammo and with Magpul and Hexmag magazines.
My initial impression was that the rifle was severely under gassed. I thought that the gas block was probably not properly aligned with the gas port and that was restricting gas flow. Normally when shooting suppressed the issue is over-gassing in my experience, which I have not observed affecting operation, only excessive wear and tear on the moving parts.
Could over-gassing be causing the issue I described above? Could it somehow be cycling to BCG so fast that it is not picking up a round from the magazine? As in, the action is cycling faster than the spring can push the next round to the top of the mag. Maybe the top round in the mag has enough spring tension behind it to keep it at the top of the mag, but the following rounds don’t? I’m completely spit-balling on this one and hoping some of you guys can help me out here.