PMC X-TAC 5.56x45mm NATO 55-grain Full Metal Jacket Boat Tail ammunition (brand part no. 556X) is the same X-TAC line trusted and tested by military and law enforcement units worldwide. PMC builds this NATO-spec load on brass cases with a 55-grain FMJ boat-tail bullet, engineered for the reliability that matters when a rifle absolutely has to run. This listing is a 20-round box. Among rifle ammunition, this X-TAC load favors AR-platform shooters running a 5.56 NATO-chambered rifle who want military-proven reliability for training or duty use.

Key Specifications

• The chambering is 5.56x45mm NATO.
• The bullet weight is 55 grains.
• The bullet type is a Full Metal Jacket Boat Tail (FMJBT).
• The case material is brass, with a centerfire primer.
• Each box holds 20 rounds.

Frequently Asked Questions

Can I fire this in a rifle chambered in .223 Remington? This is a NATO-spec 5.56x45mm load, which runs higher pressure than commercial .223 Remington. It is safe in rifles marked 5.56 NATO or .223 Wylde, but is not recommended in rifles chambered specifically and only in .223 Remington.

Is this a military or duty-proven load? Yes, the X-TAC line is used and tested by military and law enforcement units internationally.

How many rounds come in this box? This listing is a single 20-round box.

Buy PMC X-TAC 5.56x45mm NATO Ammo

Military-tested reliability in a 55-grain NATO-spec load is exactly what this PMC X-TAC ammunition delivers. Order it from our Lubbock, Texas gun shop for fast shipping to your door.