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What Size Gas Block Do I Need For Ar-15? [Solved]
Most AR-15s have barrels in a standard diameter of 0.750". If you have a pencil barrel — a thinner, lightweight barrel carried over from the original M16A1 design — you will need a gas block with an inner diameter of 0.625". Similarly, most heavy or “bull” barrels will require a gas block measuring 0.936".13 Jul 2020
Quick Tip: AR-15 Gas Block Diameter Explained
Brownells Gun Tech™ Caleb Savant is here to explain what
What size gas tube do I need?
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Explaining The Gas System On An AR15
The gas system on an
