An AR-15 handguard cap is a small, circular metal component that fits at the front end of the standard two-piece handguard, helping to secure and align the handguard on the barrel. It works with AR-15 barrels (with a hand guard cap shoulder), delta ring assemblies, front sight bases or gas blocks, and standard carbine or rifle length polymer hand guards. The hand guard cap is essential for classic AR-15 builds, ensuring a snug, stable fit for drop-in handguards.
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