Thread: adjustable gas blocks ar15

tossing up weather to put an adjustable gas block on my ar if it shoots ok its got a suppressor on it I see there are 2 types one that restricts gas flow into the action and one which bleeds excess gas off which one is better

Originally Posted by northdude

tossing up weather to put an adjustable gas block on my ar if it shoots ok its got a suppressor on it I see there are 2 types one that restricts gas flow into the action and one which bleeds excess gas off which one is better

The cheaper one

I'd go for one that restricts the gas rather than bleeds, I've got one that bleeds and it leaves a small mess near the gas block, pretty minor though really.

Restricted gas over venting gas any day for me. Venting gas = noise so it's hardly ideal if your running a can

OK cool anyone made one out of a standard block

Originally Posted by northdude

OK cool anyone made one out of a standard block

Yep, tapped an m3 grub in, was even on a low profile block so had less meat to start with. With a tapered end on the grub i run it wound in tight with a bit of loctite. Have never had trouble with the hub screw coming loose but potentially it could when running it wound out

Originally Posted by northdude

OK cool anyone made one out of a standard block

Yes, grub screw into a a2 fsb. Works fine but have had it go out of adjustment before I upped the strength of thread locker used

Pretty sure if you are thinking of the superlative arms bleed off gas block it can either act as a restrictor or bleed off depending on the setting...I have a couple still sitting in my spare parts kit that I haven't gotten around to trying yet.

Originally Posted by northdude

tossing up weather to put an adjustable gas block on my ar if it shoots ok its got a suppressor on it I see there are 2 types one that restricts gas flow into the action and one which bleeds excess gas off which one is better

I've got a low profile .750 GB that you can have, if you want to try and make it adjustable.