The Century Arms AP 51 brings the legendary design of the HK51 PDW into a modern, high-performance package. Chambered in the powerful 7.62x51mm, this compact powerhouse features a 20-round G3-patterned polymer magazine and an 8.3 inches cold hammer-forged barrel for durability and precision. With an overall length of 23.3 inches and an unloaded weight of 7.9 lb, the AP 51 is built for maneuverability without compromising firepower. It is equipped with a Navy-style assembly featuring an ambidextrous selector, an MP5-compatible wide handguard for improved handling, a standard G3 trigger setup and a birdcage-style flash hider to reduce muzzle flash. Designed for versatility and reliability, the AP 51 delivers an exceptional balance of size, power and classic appeal. The navy-style grip assembly offers a distinctive look and enhanced ergonomics for comfortable handling Equipped with an ambidextrous selector switch, providing smooth and effortless safety operation from either side for enhanced usability Bird cage style flash hider reduces muzzle flash for improved shooter visibility and reduced night-time signature Includes a 20-round magazine, offering increased capacity while maintaining a balanced profile Wide handguard for a comfortable, stable grip and improved heat dissipation