12-11-2018, 08:18 PM
Bill Alexander designed the grendel to use standard parts normally found in the ar15 that's chambered for 223/556.
So it should run properly on a carbine spring/buffer and a rifle spring/buffer if it doesn't you can fix it by upping the buffer weight with cheap tungsten buffer weights from kak or a extra power buffer spring.
If you go adjustable gas there is typically no need to change buffer springs or buffer weights it typically will get it to work.
Now if you want the most effect from adjustable gas you will have to pare it up with lowmass bcg and lowmass buffer and reduced powered buffer springs.
If you go that route be warned your warm weather setting will not work when it gets cold and your groups will grow huge and the rifle won't run properly until you readjust it for cold weather gas setting.
If your running carbine spring/buffer with normal gas block and it won't run properly check your gas block to gas port position and also bed your gas tube with locktite to the gas block to help seal off one more spot where gas is leaking do that then see if it runs correctly.
If not then buy a pair of cheap tungsten buffer weights from kak and add one at a time and see if it runs correctly.
For adjustable gas blocks wojeck makes a good one for under 40 bucks I have it on my AA barrel and it works fine.
So it should run properly on a carbine spring/buffer and a rifle spring/buffer if it doesn't you can fix it by upping the buffer weight with cheap tungsten buffer weights from kak or a extra power buffer spring.
If you go adjustable gas there is typically no need to change buffer springs or buffer weights it typically will get it to work.
Now if you want the most effect from adjustable gas you will have to pare it up with lowmass bcg and lowmass buffer and reduced powered buffer springs.
If you go that route be warned your warm weather setting will not work when it gets cold and your groups will grow huge and the rifle won't run properly until you readjust it for cold weather gas setting.
If your running carbine spring/buffer with normal gas block and it won't run properly check your gas block to gas port position and also bed your gas tube with locktite to the gas block to help seal off one more spot where gas is leaking do that then see if it runs correctly.
If not then buy a pair of cheap tungsten buffer weights from kak and add one at a time and see if it runs correctly.
For adjustable gas blocks wojeck makes a good one for under 40 bucks I have it on my AA barrel and it works fine.