Century Arms AP51 Pistol | 7.62×51 | 8.3 in | HG7887-N

The Century Arms AP51 is a compact PDW-style pistol inspired by the HK51 platform and chambered in 7.62×51 NATO. It ships with two 20-round G3-pattern polymer magazines, a Picatinny optics mount and a 5/8×24 threaded muzzle with a birdcage-style flash hider. This configuration emphasizes controllability and modularity for range work and practical shooting applications.

A reliable, low-profile red dot such as a Trijicon MRO will pair well with the AP51 and remains under $1,000 while providing a rugged footprint and a wide field of view suitable for this platform.

Product Specifications

• The manufacturer is listed as Century Arms.
• The model is listed as the AP51.
• The caliber is listed as 7.62×51 NATO (.308 Win).
• The action type is listed as Semi-Auto (roller-lock delayed blowback).
• The standard magazine capacity is listed as 20 rounds.
• The product includes 2 magazines per package in the majority of listings.
• The barrel is listed in source material as 8.3 inches and is shown with a 5/8×24 threaded muzzle.
• The receiver is described as a stamped steel receiver and the grip/assembly is described as a Navy-style polymer unit.
• The firearm is provided with a birdcage-style flash hider on the muzzle.
• Sights are listed as a fixed front and adjustable rear, with a Picatinny rail for optics.
• Ambidextrous controls are present; the safety is listed as ambidextrous.
• The listed unloaded weight is approximately 7.9 lbs (about 127 oz) in source materials.
• The package or overall length is listed in various entries; a common specification shows an overall length of 23.3 inches.
• The rate of twist is listed as 1-in-12.
• The UPC is 787450933477.

The AP51 is built to a familiar, long-established roller-lock design and carries features intended for reliable field use and optics compatibility. Its compact overall profile with threaded muzzle and 20-round magazines makes it well suited for ranged training and practical/competition-style shooting where a compact NATO-caliber platform is desired. The Picatinny rail and included magazines provide a straightforward, ready-to-configure package for shooters who want a versatile, service-style pistol platform.