Hello everyone I have a magnum research 50AE with factory muzzle break. The fire pin retainer keeps dropping and at times the fire pin will fly out. I have sent it in for warranty twice. The first time they replaced the gas check. The second time the replaced the recoil and fire pin spring. Just got it back and after the 6th round it fell down again. I pushed it back in place and it didn't fall again for the last 12 rounds I had. Has anybody else had this issue if so what was the fix. I am currently waiting for more ammo to test it more.