View Full Version : AR feeding/ firing pin

09-24-2010, 6:21 PM
Just finished building this AR. the M$ feed ramps appear to have a slight lip to them, just above the upper and below the Barrel/Chamber. I havent shot it yet but i cycled some rounds via charging handle and there looks like copper residue on the feed ramps. Is this a problem?
Also after i cycled using the charging handle the rounds there is an obvious dent from the firing pin in the primer, but not enough to make it fire. Im worried that this will make the rounds go off unintentionally when in condition 1.

09-24-2010, 7:04 PM
Tiny dent is normal, the floating firing pin actually hits the primer every time a round is chambered, but there is not enough mass to fire it.

09-24-2010, 7:37 PM
I hope your not cycling live ammo at home??