About 3 weeks ago I made the trip to Sparta, Michigan and plunked down the cash to buy a 450 upper, 18" stainless steel barrel. Also bought a few mags and several boxes of Hornady Black ammo. A visit to Opticsplanet.com got me a Vortex Diamondback scope and rings for a decent price. Mounted the scope and then the head cold from the devil set in, couldn't make it to the range until Saturday the 21st. I put up targets at 50 & 100 yards, loaded one round in the mag and click!!!! Well, maybe I didn't chamber the round, worked the charging handle and ejected a live round without any marks whatsoever on the primer. Broke the rifle down, pulled the bolt and then the firing pin.
The firing pin had the tip milled off! Luckily I had a 556 AR in the truck that I took a good firing pin out of so the trip was not wasted. I went through a box of ammo getting the rifle sighted in and was happy with 1" - 3 shot groups at the end.
This morning I made a call to GLFA and explained the situation and they told me they were waiting on the call, seems that they had ground off a firing pin to test new uppers with and somehow the "testing firing pin" got put into my upper without noticing it. A new firing pin and a complimentary box of ammo is in the mail to me now, at no charge.