Solid works well - Seekins Precision Low Profile Adjustable Gas Block

purchased one liked it bought another. Seems that it lets dirty gas between the block and the barrel but no big deal to my knowledge. Really gotta torque the set screw to keep from self adjusting but once its set forget. Easy to install and this is the cheapest adjustable block from a quality brand I have found anywhere. Unless your hand guard lines up right you do have to remove the hand guard to get at the adjustment but again set and forget. Fit both my slim hand guards smallest being 1.3 internal diameter psa MW industries. Tamed my 300blk pistol and maintained reliability. I think it possibly slows down/reduces the initial "hit" of pistol gas vs other gas system lengths but allows solid flow for lower pressure higher volume rifle gas. Put on 8.5 inch 300blk psa pistol upper and 18 inch rifle gas Ballistic advantage barrel in 556.