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5.56mm NATO Caliber Headspace GO Gauge for AR15 / M16 Armorers Kit

Our Price:

$32.95
SKU 556-go Category

This high quality machined steel gauge measures headspace in the barrel’s firing chamber. It is also used to indicate proper chamber depth or an oversized bolt. Etched with caliber marking and “GO” designation. Machined to SAAMI specification, and made in USA.

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