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Discussion in 'Black Rifle Forum' started by OUSooner, Jan 28, 2010.
Can you use a .22 conversion kit in these?
Those .22LR conversions are meant to work with the standard DI rifles, whereas the piston rifles each use their own BCGs, so unless the .22 kit is specifically designed for the piston system being used, I'd say no.
The .22 conversion kits can be used with the Piston kits. Some pistons kits are easier to use with the conversion kits than others as there is not a single standard piston design. Basicially (1)one has to to is take out the piston rod and (2)turn the piston regulator to off. (3)Replace the piston carrier and bolt with the .22 conversion kit .
With some piston kits such as Adams Arms, CMMG,STag,etc...steps (1) and (2) can be easily and quickly done from the front of the gun. Research/call/email the manuf of the piston kit you are interested in and enquire about the use of .22 conversion kit with their particular piston kit. Get it from the horses mouth.
Come to think of it, the .22LR conversions operate by blowback, don't they? So I guess it doesn't really matter whether it's a DI or gas piston upper, because it doesn't operate with either.
Now you got me wondering. In the major 22 conversion systems, how is the gas coming through the gas tube handled? Blocked? Vented? Or, what?
I'm guessing that the gas tube just gets fouled up by the .22 ammo, but doesn't play a part otherwise in the operation.
The gas from the .22 still goes down the gas tube, and in to the 'upper'.
It's suggested you shoot some 5.56/.223 after the .22 to blow everything out.