Or causing my extraction issues, but the BCM replacement parts were extremely hard to instal and the factory Armalite parts came out easy by hand. Have lots of ammo loaded for testing and weather permitting I'll get it done this afternoon.

That 'donut' O-ring makes things very -very tight.

I never had to use one on anything I had in inventory, just the 'buggy bumper" spring inserts.

You shall see what you shall see

to the shop. We'll see when I get another chance to get out to the range.