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Posted: 7/4/2016 6:28:45 PM EDT
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Anybody here have experience with both solutions? Either option any have significant advantage or disadvantage.
I've normally use adjustable gas blocks, but a regulated BCG might save both money and weight. |
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Likewise. Have two pinned carbines with adj gas keys, handles the gas like the 2A regulated BCG but not quite as simple to adjust. Also run a few adj gas blocks. Adj gas block is the best route unless you're pinned.
http://www.ar15.com/forums/t_3_118/691315_Who_else_is_running_an_adjustable_gas_KEY_.html |
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I tried the RCA adjustable gas key with their lightweight BCG and gutted rifle buffer on a midlength (don't recall the exact weight of the setup). I couldn't turn the gas down enough for my liking. With the adjustment screw all the way in, it still cycled. I then went to an SLR adjustable gas block. You can turn it all the way off. I suspect that on midlengths and rifles they'll still cycle even with no/little gas entering the carrier if using an adjustable key and an otherwise unrestricted gas system. Though I don't believe that the lowest setting on the RCA key is all the way closed. Haven't tested comprehensively yet. In retrospect, I wish I'd just gone with the adjustable gas block.
I researched the arguments regarding if there is a difference between the adjustable keys and the adjustable gas blocks. Very interesting discussions. Basically do they have the same effect? At this point based on my experience, they do not. I am playing with midlengths, and rifles. Does any one make gas tubes that are restricted, not necessarily adjustable? I started down the path of crushing one in a vise, but didn't finish that experiment. Should be nice and cheap and wouldn't require modifying the gas block setup. It's very interesting to tweak these things. I fully expect that I am making the gun less reliable. |
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Quoted:
I tried the RCA adjsutable gas key with their lightweight BCG and gutted rifle buffer on a midlength (don't recall the exact weight of the setup). I couldn't turn the gas down enough for my liking. With the adjustment screw all the way in, it still cycled. I then went to a SLR gas block. You can turn it all the way off. I suspect that on midlengths and rifles they'll still cycle even with no/little gas entering the carrier. Though I don't believe that the lowest setting on the RCA key is all the way closed. Haven't tested comprehensively yet. In retrospect. Does any one make gas tubes that are restricted, not necessarily adjustable? I started down the path of crushing one in a vise, but didn't finish that experiment. Should be nice and cheap and wouldn't require modifying the gas block setup. You did remove the locking set screw from the RCA, didn't you? There are two screws stacked in there... 
As far as gas tubes, MGI makes one. |
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