Out of stock
SKU: PMC556X
UPC: 741569010115
The X-TAC line from PMC delivers military-specification 5.56 NATO ammunition built for shooters who need consistent ignition and reliable feeding in semi-automatic rifles. This 55-grain full metal jacket boat tail load launches at 3270 feet per second, providing the velocity and trajectory characteristics that AR-platform owners expect from quality brass-cased ammunition. We stock this 20-round box configuration for buyers who want to evaluate performance before committing to larger quantities, though PMC also produces this load in battle packs and ammo cans for volume shooters building up their ammunition reserves.
PMC manufactures X-TAC cartridges to meet the demanding specifications required by military and law enforcement agencies worldwide. The 55-grain projectile uses a boat tail design that reduces aerodynamic drag, promoting flatter trajectories at distance compared to flat-base bullets of the same weight. Brass cases are boxer-primed for those who reload their spent brass, and PMC's quality control processes ensure dimensional consistency that feeds reliably through M16, M4, and civilian AR-15 pattern rifles. The 3270 FPS muzzle velocity from this load generates approximately 1307 foot-pounds of energy, suitable for range training, competition, and defensive applications where barrier penetration matters.
Whether you run a carbine-length AR for home defense or a rifle-length build for precision work, this 5.56x45 ammunition handles both roles without complaint. The 20-round box fits neatly into range bags and makes it easy to top off partially loaded magazines between sessions. Serious shooters often pair X-TAC range ammunition with match-grade loads for zero confirmation, knowing the point of impact shift between the two remains predictable. Browse our full selection of 5.56 ammunition and best 5.56 ammo guide for additional options suited to your shooting needs.
Firing 5.56 NATO in a .223 Remington chamber is generally not recommended due to pressure differences. The 5.56 NATO operates at higher chamber pressures. Rifles marked 5.56 NATO or .223 Wylde safely handle both cartridges. Check your barrel markings or owner's manual before purchasing.
Yes, X-TAC ammunition uses boxer-primed brass cases suitable for reloading. The brass meets military specifications for dimensional consistency, making it popular among handloaders who collect range brass for processing and reuse.
The 55-grain X-TAC load produces a muzzle velocity of 3270 feet per second when fired from a standard test barrel. Actual velocity varies based on your barrel length, with shorter carbine barrels typically producing slightly lower velocities.
This listing is for a 20-round box of ammunition. PMC also manufactures this same load in battle pack and ammo can configurations for shooters who prefer to buy bulk 5.56 ammunition at volume pricing.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
