Re: Reasons for an adjustable gas block........
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: STI_1911_Guy</div><div class="ubbcode-body">I have looked on here and couldnt really find what i am looking for but sorry if i missed it and please feel free to point me in the right direction but here we go. What are the benefits of an adjustable gas block? Do the set screws have a problem of coming loose or is this not an issue? And last but not least without opening a can of worms(no popcorn statements please)does an adjustable gas block loose any accuracy compared to a fixed one? Thanks for any comments. </div></div>
1) allow the user to "tune" the gas system for optimum reliability, etc. is the basic reason. Many factory production rifles are over-gassed which creates additional recoil, additional wear/tear on the rifle, and can impact accuracy/reliability/functionality of the rifle. Adjustable gas blocks allow the user to tune the gas system, thus cyclic rate, to a particular ammo (or situation such as suppressed vs. unsuppressed shooting) and optimize the feel/function of the rifle. With a suppressor, an adjustable gas block permits the user to: a) completely shut off the gas system; b) tune the gas system for less gas when shooting suppressed to slow down the action/etc.; and c) to tune the gas system for more gas when shooting unsuppressed/etc.
2) Installation of adjustable gas blocks varies by mfg. Some are set screw models, some are clamp on, etc. Regardless of type...if they are installed properly...they won't come lose.
3) In terms of accuracy...you won't likely experiences any loss whatsoever. Actually, you can improve accuracy of a rifle by tuning the gas system which in turn reduces recoil impulse, improves the ability to keep your sights on target/sight recovery.