markw5524

Hi, I'd been having problems for the last year with my m3000 cycling light loads properly, the gun would always eject and chamber the next cartridge, but the bolt wouldn't rotate to the correct position, I'd tried polishing the mag tube and bolt carrier which helped slightly but still the problem would occur about 1 in 20 shots. Yesterday morning when cleaning the bolt assembly I noticed when pushing back the rotating part into the bolt body, it would jam sometimes and not rotate so I took it apart to see what was causing this, on the rotating part of the bolt there is a radius leading into a chamfer which causes it to rotate when pushed back against the pin that holds it in, the chamfer is at a fairly steep angle and this was what caused it to jam, I took about 5-10 degrees off the chamfer with a file and the polished it, when reassembled the bolt rotated flawlessly, I went to local clay shooting range and fired 170 shots without a problem, sorry that was so long winded but hopefully this might help some of you guys.

Hi, on the subject of light loads with the m3000, I had been having problems for the last year with cycling, the gun would always eject and chamber the next cartridge, but the bolt wouldn't rotate to the correct position, I'd tried polishing the mag tube and bolt carrier which helped slightly but still the problem would occur about 1 in 20 shots. Yesterday morning when cleaning the bolt assembly I noticed when pushing back the rotating part into the bolt body, it would jam sometimes and not rotate so I took it apart to see what was causing this, on the rotating part of the bolt there is a radius leading into a chamfer which causes it to rotate when pushed back against the pin that holds it in, the chamfer is at a fairly steep angle and this was what caused it to jam, I took about 5-10 degrees off the chamfer with a file and the polished it, when reassembled the bolt rotated flawlessly, I went to local clay shooting range and fired 170 shots without a problem, sorry that was so long winded but hopefully this might help some of you guys.