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Thoughts on an adjustable gas block for an AR PISTOL

BamaakIIBamaakII Posts: 479 Member
On my AR rifles, I use superlative arms adjustable gas blocks.  I like them a lot, easy adjustment, lots of adjustability and a non cloging design.  Currently, they seem to be unattainable, especially in .750 clamp on style.  I'm wondering if it's worth it in a pistol, 10.5 inch barrel, carbine length gas tube.  I tend to think it would be more beneficial since I reload most all my ammo.  Any thoughts?  I may try another brand if the drought continues. 


  • ZeeZee Posts: 28,444 Senior Member
    Can’t hurt. 
    "To Hell with efficiency, it's performance we want!" - Elmer Keith
  • GunNutGunNut Posts: 7,642 Senior Member
    I run all sorts of ammo in my 7.5" SBR with no issues and no adjustable gas block.
  • ZeeZee Posts: 28,444 Senior Member
    The only gun I run an adjustable block in is my LR-308 because of their tendency to be over gassed and eat themselves. 
    For that reason, mine works like a champ!!!  I’ve watched high dollar guns break left and right shooting bolt gun ammo. 
    "To Hell with efficiency, it's performance we want!" - Elmer Keith
  • BamaakIIBamaakII Posts: 479 Member
    Someone should offer reduced ID gas tubes.  Everything commercial is overgassed to run every type crap ammo out there
  • BigslugBigslug Posts: 9,875 Senior Member
    Having worked on a number of full-auto Colt Commandos with 10 or 11 inch barrels, I've got to think any way you can tune the amount of gas going to the bolt carrier is a positive.

    Any 5.56 carbine AR is using guts and ammo geared to run with a rifle-length gas system, and pressure at the gas port is MUCH higher as you move that port rearward.  Also, the less barrel you have in front of the port, the less dwell time you have to pressurize the system, and the more gas you have to bleed by way of a larger port to get the gun to cycle.  The result is that shorties tend to cycle violently and wear stuff out.  Rifle ammo and gas operation in a platform best suited to pistol ammo and recoil or blowback operation - not my favorite engineering concept.

    "Nothing is safe from stupid." - Zee
  • BamaakIIBamaakII Posts: 479 Member
    edited February 2021 #7
    Well since I've had no luck finding a SA gas block in the size and type I need, I may buy a spikes an LGS has.  Guy says he uses them and likes them.  Pricey store though.
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