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Merchant throat gauge: .223 / 5.56. Precision steel throat erosion gauge for AR-15 M4 M16 .223 Remington 5.56 NATO rifles measures chamber throat wear headspace safety inspection made USA gunsmith must-have accurate markings determines barrel life accuracy potential reliable function rebuild restore DPMS Colt Bushmaster essential tool.
"Merchant gauge guns ARs!" accurate. "Gauge value," victory. Merchant .223 Throat 4.9/5.
Guns ARs. Groups good.
Merchant .223 Throat Gauge Steel.
The End