11-23-2020, 02:04 PM
peak98 Wrote:None of my uppers (6.5gr and 223) have adjustable gas blocks but theyre 16-20 barrels. I recently picked up a 12.5 upper from the classified. It has a standard gas block as well, I am waiting on a BCG to arrive to try it out. Lower is an AP with sb3 arm brace. I do have an AP adjustable block that I picked up with the intention of using on a pistol build. I was told by my gunsmith that an adjustable block isnt necessary unless shooting suppressed (not at this time). What are the pros/cons for a Grendel pistol with and without the adjustable block? Would I be better off running a h2 buffer? Please let me know your opinion and the reasoning behind it. Im wanting to learn and understand. Thanks.
peak98
Here it is nice and simple to follow.
You dont need it but if you dont use it be sure you use a full weight bcg, a stiff buffer spring and have several heavy to very heavy buffers on hand. Because it's going to be overgassed.
Now if you use it, the normal carbine buffer/spring that came with the brace will work just fine, set it so it just cycles and locks the bcg back on empty mag.
If you want the full effect you can also drop a lowmass bcg into your pistol with the adjustable gas and the gun will run even better.
Heavy buffers and stiff springs are for controlling gas levels when it's not adjustable.
Adjustable gas blocks, lowmass bcgs and jp scs are much more smooth running, even when cycling by hand.
I have done 12's 12.5's 16, 18, 20, 22, 24 inch grendels both ways heavy buffers and stiff springs as well as lowmass, hp scs and adjustable gas.
And the adjustable gas, lowmass setup wins every time as far as running smooth and clean, less felt recoil and just a overall better feeling gun.