06-25-2023, 04:14 AM
Update: today I took the new Grendel out for its maiden voyage. I loaded up a pressure ladder of 97gAbsolute Hammers over A2520 powder. I ran 13 rounds getting up to 2788fps safely.
I kept adjusting the gas screw out until it was barely holding on but could not get the bolt to lock back on the empty mag.
Im using a Geissele carbine buffer assembly. I suspect the culprit is their "Super 42" buffer spring, is "15% stronger" than a standard carbine spring.
I kept adjusting the gas screw out until it was barely holding on but could not get the bolt to lock back on the empty mag.
Im using a Geissele carbine buffer assembly. I suspect the culprit is their "Super 42" buffer spring, is "15% stronger" than a standard carbine spring.