Home CMMG How To Tune Your AR-15 Adjustable Gas Block – with Jesse Tischauser...

How To Tune Your AR-15 Adjustable Gas Block – with Jesse Tischauser – OpticsPlanet.com

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OpticsPlanet Gear Expert Jesse Tischauser explains how to Tune/Adjust your AR-15 Adjustable Gas Block.

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38 COMMENTS

  1. I’m having issue’s with FTF & FTE on my AR-10 shotgun . I haven’t check to see if it has an adjustable gas block yet . If it does I will try your technique . If it doesn’t should I try a different spring & buffer . Or replace it to an adjustable block ? Also I have seen damaged aluminum blocks . Would you recommend an adjustable stainless steel block . If so what kind would you recommend . I would like it to be reliable . It is an Utas 12 gauge . Thank You It is a Rod Operating System ..

  2. I have an "Anderson Manufacturing Low Profile Adjustable Gas Block – .750" – Set Screw Style." However as I am trying to adjust the gas block with my Allen Wrench, it does not seem to be locking onto something. It literally just feels like I am sticking a 5/64 wrench into an empty hole. Can someone please confirm if there is supposed to be a small screw in the port where you adjust? I believe I may be missing something here on the gas block itself.

  3. When you think you have the gas block adjusted where you want it turn your rifle to the left, right, and upside down and fire from each position. What I have found is that at times the gas may be enough to lock the bolt back while fired from a normal position but with the gun fired from an odd angle it may need more gas.

  4. I always taught that even if you can get the bolt to lock, the gas block may not be properly tuned. I understood that with the muzzle being 12:00 and the charging handle being 6:00, the cases should eject 20-30 degrees beyond the 3:00 position and slightly to the rear of the shooter. Cases ejecting anywhere ahead of 3:00 = under gassed. Or is that an old wives tail?

  5. Jesse, what system does the Sig Sauer M400 have? Gas? I used an AR at a job I used to have and it hardly had any recoil…lately I've been shooting the Sig Sauer M400 and it recoils a lot compared to the AR I had at work.

  6. You might not want to remove the adjusting screw all the way out to put loctite on it. Rather most of the way out. You dont want to get it on the tip of the screw and into the orifice where it would harden.

  7. Just found your channel. THANKS! I just got a PSA Gen 2, 6.5 & its carrier bolt was slamming HARD into the recoil assy. WAY overgassed. It has the adjustment & the lock for it. Your instruction saved me from having to send the damn thing back. PSA did NOT send any instructions w the unit. Subbed!

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