The HM Defense HM15F556 Guardian F5 delivers proven AR-15 platform reliability in 5.56x45mm NATO chambering. This carbine-length rifle combines mil-spec construction with modern manufacturing precision for consistent performance across multiple applications.
What Makes This Different
The Guardian F5 features a properly staked carbine gas system that ensures reliable cycling with both 5.56 NATO and .223 Remington ammunition. The 16-inch barrel provides optimal velocity for the 5.56 cartridge while maintaining maneuverability. HM Defense machines the upper and lower receivers from 7075-T6 aluminum forgings, then applies a durable black anodized finish that resists corrosion and wear better than standard Type III hard coat anodizing.Key Features
- 16-inch barrel with 1:7 twist rate optimized for 55-77 grain projectiles
- Mil-spec trigger group with standard AR-15 compatibility
- M4 feed ramps and chrome-lined barrel extension for feeding reliability
- Standard carbine buffer system with 6-position collapsible stock
- Picatinny rail gas block and standard A2 flash hider
- 30-round Magpul PMAG included with purchase
- Standard AR-15 takedown pins for easy field stripping
Technical Specs
- Caliber: 5.56x45mm NATO/.223 Remington
- Barrel Length: 16 inches with 1:7 twist rate
- Overall Length: 32-36 inches (stock collapsed/extended)
- Weight: 6.5 pounds unloaded
- Magazine Capacity: 30+1 rounds
- Finish: Black anodized aluminum, black polymer furniture
- Gas System: Carbine length with standard buffer tube
- Barrel Profile: Government profile with M4 feed ramps
- Manufacturing: Made in USA with lifetime warranty
