Arizona_Mike
Member
- Joined
- Feb 15, 2013
- Messages
- 3,452
Confine the discussion to closed-bolt, semi-auto AR pattern guns.
I have been using an H2 with a pistol gas 10.5" 300BLK (because of the high pressures at the pistol port location) and a 20" rifle gas .223 Wylde because the Canadian military uses the H2 (and the US used the H2 or the new H6) for rifle uppers on carbine lowers (longer impulse than carbine?).
Heavier buffers and bolts are supposed to reduce recoil but I wonder if that only makes sense given a "fixed" gas port.
Recently I built a pistol gun using the Adams Arms lightweight bolt which is much lighter than a standard bolt let alone the M16 bolts I use in my DI guns. The bolt is lighter by an amount that swamps any buffer differences and AA claims this reduces recoil. Not only is the rifle noticeably lighter to tote, I have never felt an AR with so light recoil.
So this makes me wonder . . . If I have an adjustable gas block anyway and bolt bounce is not an issue for semi-auto, am I gaining anything using an H2 buffer rather than just using a C with a smaller gas adjustment setting (assuming a Syrac gas block with approximately 16 positions between fully opened and closed)?
In addition to the piston experience, I need to have my gas block out a full 3 turns (12 or 16 detents) on the rifle length upper with the H2 buffer which is more than any other configuration I have tested. That got me thinking, why don't I just use the C buffer and save a little weight and have a cleaner gun?
Does anyone really understand buffer theory when you can also adjust the gas port?
Mike
I have been using an H2 with a pistol gas 10.5" 300BLK (because of the high pressures at the pistol port location) and a 20" rifle gas .223 Wylde because the Canadian military uses the H2 (and the US used the H2 or the new H6) for rifle uppers on carbine lowers (longer impulse than carbine?).
Heavier buffers and bolts are supposed to reduce recoil but I wonder if that only makes sense given a "fixed" gas port.
Recently I built a pistol gun using the Adams Arms lightweight bolt which is much lighter than a standard bolt let alone the M16 bolts I use in my DI guns. The bolt is lighter by an amount that swamps any buffer differences and AA claims this reduces recoil. Not only is the rifle noticeably lighter to tote, I have never felt an AR with so light recoil.
So this makes me wonder . . . If I have an adjustable gas block anyway and bolt bounce is not an issue for semi-auto, am I gaining anything using an H2 buffer rather than just using a C with a smaller gas adjustment setting (assuming a Syrac gas block with approximately 16 positions between fully opened and closed)?
In addition to the piston experience, I need to have my gas block out a full 3 turns (12 or 16 detents) on the rifle length upper with the H2 buffer which is more than any other configuration I have tested. That got me thinking, why don't I just use the C buffer and save a little weight and have a cleaner gun?
Does anyone really understand buffer theory when you can also adjust the gas port?
Mike