Black Knight M4 Outer 2 Piece Barrel System 9in. and 14in. for M4 AEGs

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  • $39.95
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The Black Knight M4 Outer 2 Piece Barrel System 9in. and 14in. for M4 AEGs is far and away, one of our most popular items. People can't seem to get enough of it.

Inventory Last Updated: Jul 12, 2025