03-29-2017, 04:34 AM
Sorry it has been so long to respond... I checked thumb pressure on the extractor, and it was significantly less on the grendel/x39 bolt. I haven't removed the extractor to see if I can swap it out of another bolt, but I will as soon as I can and hopefully get back out and check it again.
I didn't remember what the gas port diameter was, but checked where I bought it from. States .750, and I am pretty sure the gas block is a seekins. I tuned it back when I first put it together shooting one round at a time. Loaded 1 round into the mag, and then kept opening it ever so slightly until it locked back.
I didn't remember what the gas port diameter was, but checked where I bought it from. States .750, and I am pretty sure the gas block is a seekins. I tuned it back when I first put it together shooting one round at a time. Loaded 1 round into the mag, and then kept opening it ever so slightly until it locked back.