Accuracy Systems Ruger! Mini-14/30? Gas Block Adjustable

7075 Aircraft Grade Alloy gas block replaces factory part using simple tools and helps you fine tune the gas pressure on your Ruger Mini-14 and Mini 30. Let’s you adjust the distance brass flies, reduce battering of the op-rod, and protect optics from excess shock. Improves accuracy by reducing the internal harmonics of the op-rod contacting the receiver during high speed cycling. Adjust from no-cycling for single-shot operation, to wide-open shooting. This Gen 4 gas block is light weight yet very durable and strong. The Gen 4 also features a newly designed positive click adjustment knob so it cannot move out of adjustment. Comes with Sling swivel stud that fit most s Mfg: Accuracy Systems SPECS: 7075 Aircraft Grade Alloy with Nickel Stainless Color. Comes complete with everything you see except you will need to reuse your factory gas port bushing. Allen wrench is included for your convenience. Mini-14 model fits rifles with serial number prefix from 181 through 197 (.562&quot