ken grant

Thanks for the info .

What is the difference between a 550B and a 550C ?

Warm up your Gas bottle not your mag before you refill. a cold mag and warm gas will fill the mag better. If the mag is then cold, just stick it in your pocket and let it warm up. I have a WE 1911 with 3 mags and one of them will not lock the slide back on the last rd. The mag spring is weak and doesn't push the follower up fast enough when shooting but will lock back when working the slide by hand.