Best AR-15 Adjustable Gas Block

Am Shooting Journal ^ | 11/16/2018 | B Hormberg

[w1n1]

Did you know that replacing the factory gas block on your AR-15 with an adjustable gas block can improve your rifle’s performance? Such as:

-Less recoil, results in a faster follow-up shot.
-Less stress on the operating parts.
-Less carbon build-up, better reliability and easier cleaning.

The concept of an adjustable-gas system has been around for quite a while. Competition shooters using M1 Garand rifles, a semiauto first used in the US military in 1936, found utility in adjustable gas plugs to regulate the cycling of the action by letting out a little extra gas. Perhaps the most prolific use was in the FN-FAL (Fabrique Nationale-Fusil Automatique Légerseries, a Belgium manufacturer) rifles developed after World War II. On the FNs, the amount of gas released out of the gas cylinder as the piston was cycling could be adjusted by hand, which controlled how much gas pressure was applied to the piston.
This is similar to what the M1 competition shooters were doing with their adjustable gas plugs. The normal procedure is to tune down the gas pressure until the gun doesn’t fully cycle, then tune it up one click at a time until it cycles reliably, then go a few clicks further for reliability and you’ll be in the optimal zone.
This way the gun is reliable with the least amount of recoil and stress possible, and it can be tuned to a specific type of ammunition as well. Read the rest of best adjustable gas block.

[Chode]

yup, physics is physics

i’ve seen guys build short barrel guns wi standard port dia then out run the mag spring, so then they up the mag spring, then they have to up the return spring then run into extraction problems, etc

[DPMD]

Vince, is that you ?

[Tailback]

That’s why the AR is so popular. It’s a platform that people can tune, tweak, finagle, adjust, and fiddle with to their hearts content.

I’m of the mind that if it ain’t broke, don’t fix it. With a caveat. I was on the state shooting team for 3 years and I absolutely have to have a good crisp match trigger. Other than the trigger, every rifle is a tool with a job.