ArmaLite DEF15 M-15 5.56 NATO 16" 31-Round Rifle

The ArmaLite DEF15 M-15 5.56 NATO 16" rifle is a purpose-built platform designed for law enforcement, military personnel, and trained civilian operators who demand reliability in high-stress environments. This direct impingement rifle delivers the ergonomic controls and modularity that professional end-users expect, making it equally suitable for duty use, training, or tactical operations. The 16-inch barrel provides an optimal balance between velocity, maneuverability, and practical accuracy for close-quarters and mid-range engagements.

Built on proven M16/M4 platform fundamentals, the ArmaLite DEF15 features a 5.56 NATO chamber—the NATO-standard cartridge adopted by military forces worldwide for its velocity, accuracy, and ammunition availability. The fixed-stock configuration enhances stability during sustained-fire training and reduces mechanical failure points compared to collapsible designs. At 8.6 pounds unloaded, the rifle remains controllable for extended operations while maintaining sufficient mass to manage recoil and support precision shooting. The 31-round magazine capacity ensures ample ammunition for dynamic engagement scenarios without unnecessary bulk.

Law enforcement tactical units, military training programs, and professional shooters benefit most from the DEF15's predictable handling characteristics and time-proven direct impingement design. The rifle integrates seamlessly with standard AR-platform accessories, Picatinny rail systems, and mil-spec attachments, allowing operators to configure optics, lights, and ancillary equipment to match mission requirements. Proper maintenance and lubrication—essential for any tactical rifle—will ensure consistent performance across diverse environmental conditions and operational tempos.