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Johnch
09-18-2015, 10:56 PM
I am starting to work on a upper for the AR 15 in 300 BlackOut

One thing I would like is a Gas Block that I can change the amount of gas sent to the bolt

Sort of some set up like I have on the FN FAL

As I like not chasing brass when plinking

Or (I Hope )when I am using a Suppressor

I know there are some out there
I am just looking to do this 1 time
So I would like to get a good set up the first time

Thanks
John

Mauser48
09-19-2015, 11:53 AM
http://www.midwayusa.com/product/332827/syrac-ordnance-gen-ii-click-adjustable-gas-block-ar-15-lr-308-standard-barrel-0750-inside-diameter-low-profile-black-melonite?cm_vc=ProductFinding

danski26
09-19-2015, 01:07 PM
JP makes a good adjustable gas block

Gunor
09-20-2015, 08:20 PM
Carbine or Pistol length gas system. Pistol will run both sub and super - usually.

geoff in oregon

cmdrted
09-20-2015, 09:09 PM
all above good info. the shorter gas systems usually don't need any tweaking. the problem with adj gas blocks is access. if you don't use a shorty handgaurd you can't usually get to the adjust screws. the bloackout with the shorter systems are pretty reliable as is.

Johnch
09-20-2015, 09:45 PM
Thanks for the ideas
I put on on the "Varmit" 223 Ar I built
I have to use a long Allen Wrench to ajust that one

But I have no clue who made that one , as I got it from a guy in a unmarked plastic bag
Oh he couldn't use it so he almost gave it to me , just to get out of his house
As his wife was on the war path about his "Projects"

Thanks
John

wordsmith
09-20-2015, 09:47 PM
http://www.midwayusa.com/product/332827/syrac-ordnance-gen-ii-click-adjustable-gas-block-ar-15-lr-308-standard-barrel-0750-inside-diameter-low-profile-black-melonite?cm_vc=ProductFinding

Mauser48 nailed it. I'm using this one regularly. Adjustable, detents that hold the screw in place, and relatively reasonably priced. No need to look further.

osteodoc08
09-20-2015, 11:33 PM
300 BLK really needs a pistol length gas system to work at its best. Adjustability with the above has block helps with the subs.

300 BLK really shines as a SBR with suppressor.

Johnch
09-21-2015, 12:57 AM
http://www.midwayusa.com/product/332827/syrac-ordnance-gen-ii-click-adjustable-gas-block-ar-15-lr-308-standard-barrel-0750-inside-diameter-low-profile-black-melonite?cm_vc=ProductFinding


That looks like the one I will order
I like that it is SS not AL ...as long term I feel the Al gas blocks erode from the gas
How much , probely not much , but as I said
I plan on doing this 1 time and the correct way , as to not spend $$ to do it a 2 time

Also if ...no when I get a suppressor , I will much of the time have the gas block closed
That way I can enjoy the lower noise and not chase brass

John

FWest
09-21-2015, 04:57 AM
I have a micro adjustable from these guys. Works fine. http://www.bte-usa.com/#!bte-set-screw-micro-gas-blocks/c110e