PMC 5.56 M193 at Academy for 40¢ a shot…
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PMC X-TAC™ 5.56mm 55-Grain Centerfire Rifle Ammunition - 20 Rounds | Academy
The PMC X-TAC™ 5.56mm 55-Grain Centerfire Rifle Ammunition features a full metal jacket boat-tail design and a 0.243 ballistic coefficient.

