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5.56mm NATO Caliber Headspace NO-GO Gauge for AR15 / M16 Armorers Kit

Available on backorder

Our Price:

$32.95
SKU 556-nogo Category

This high quality machined steel gauge determines excessive headspace in the barrel’s firing chamber, as well as too much chamber depth, or an undersized bolt. A bolt that closes on a No-Go gauge means that a chamber is close to the maximum chamber size. Etched with caliber marking, and “NO GO” designation. Machined to SAAMI specifications, and made in the USA.

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