07-26-2022, 01:35 PM
An AR can be rough on brass for sure. One of the best tricks I've done to help keep dents to a minimum was to cut a coil ot two off of the ejector spring (like was previously mentioned by Klem). My pair of Grendels don't have the brass deflector wart but the rear of the ejection port did put a quarter moon on brass until I shortened the spring. Keeping the gas tuned down (but still operating 100%) helps too.
The brass battering I will not tolerate are the gouges on the case necks from the sharp edges of the barrel extention (2 lug recesses at 3 O'clock). I make a point to smooth them up before assembly. Shortening the ejector spring helps with this too. Grendel brass is expensive so I try to take care of it as best I can.
Klem also gives good advice about keeping the adjustable gas block operating. I will give all of mine a quick squirt of Free-All down the gas tube before cleaning and turn in and back out a few turns (all SLR gas blocks here) then let them sit muzzle down. Everyone has their own tricks to keep these rifles running....
The brass battering I will not tolerate are the gouges on the case necks from the sharp edges of the barrel extention (2 lug recesses at 3 O'clock). I make a point to smooth them up before assembly. Shortening the ejector spring helps with this too. Grendel brass is expensive so I try to take care of it as best I can.
Klem also gives good advice about keeping the adjustable gas block operating. I will give all of mine a quick squirt of Free-All down the gas tube before cleaning and turn in and back out a few turns (all SLR gas blocks here) then let them sit muzzle down. Everyone has their own tricks to keep these rifles running....