NATO
Showing all 3 results
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5.56×45 NATO
$0.00Pilot Floating
Uses 223 Rem. Gauges or 5.56 Gauges.
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7.62×51 NATO
$0.00This is the Military Chamber for the 7.62 NATO. Not a 308 Winchester.
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AR-15 Extension Gauges (5.56)
$15.00These Gauges permit the checking of a barrel extension and barrel headspace without the need for a BCG or even a bolt. This set for 5.56 Nato or 223 Remington.