Spike's Tactical Enhanced Adjustable Micro Gas Block (.750 w/set screw)
[SUGB140]

After having another manufacturer's set-screw adjustable gas block adjust itself (despite "thread-locker" on screw) during a recent major 3-gun match, (causing the rifle to malfunction and costing me an eternity in time and a poor overall placement) I searched for a better solution and discovered the ST Enhanced Adjustable Micro Gas block. I instantly recognized that this was the answer to my dilemma. The front-adjust design means no holes drilled in the forearm for access to the adjustment screw (brilliant) and the locking detent provides complete confidence in knowing its going to stay in perfect adjustment without thread-locker or additional set-screws (again, brilliant). Several hundred flawless rounds down range, 100% reliability since install. 6 out of 5 stars...