5.56 NATO MIN and MAX Headspace Gage Set

• Function:The difference between the length of a standard cartridge, expressed as a gauge, and the actual chamber length of the gun
• GO/MIN Length:Corresponds to the minimum chamber dimensions.
• Max Length:Maximum rifle chamber gage checks
• Headspace tolerance ground to a very exacting ±.00015.
• 产品描述：5.56 NATO MIN and MAX Headspace Gage Set
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