HM Defense HM15F DefenderM5 5.56 NATO AR-15 Rifle, 16-Inch Monobloc Barrel, Free-Float M-LOK, HMB Bolt, Multi-Port Brake
This HM Defense HM15F DefenderM5 stands out with the company’s Monobloc 16-inch barrel featuring an integral gas block, an HMB bolt, and a free-float aluminum M-LOK handguard with a full-length top Picatinny rail. It is a full-size, direct-impingement AR-15 chambered in 5.56 NATO with a 30+1 capacity, built on 7075-T6 forged aluminum receivers with a hard-coat anodized finish. The rifle includes a multi-port muzzle brake and a flat-top upper with forward assist, and it was made in Mount Orab, Ohio.
Condition
Overall Condition: As-new condition with no signs of prior handling beyond what’s typical from inspection (see photos).
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are very minimal signs of use.
What's Included
- HM Defense HM15F DefenderM5 rifle
- Original HM Defense factory cardboard box
- One 30-round Amend2 polymer AR-15 magazine
The HM Defense Monobloc barrel is the centerpiece of this rifle. It integrates the gas block directly into the 16-inch, match-grade, button-rifled steel barrel and comes finished in Cerakote. The barrel is threaded and fitted with a multi-port muzzle brake.
HM Defense equips this model with its HMB bolt. The action is semi-automatic, direct impingement, and the rifle uses a flat-top upper with a forward assist.
The free-float aluminum M-LOK handguard provides accessory attachment points, and the full-length top Picatinny rail runs from the receiver across the handguard. An American-flag ejection-port cover adds a distinct visual touch.
The receiver set is 7075-T6 forged aluminum with a hard-coat anodized finish. Furniture includes an adjustable, collapsible 6-position polymer stock with a 13.25-inch length of pull and a B5 Systems pistol grip. A manual safety is standard.
Chambered in 5.56mm NATO, this full-size AR-15 platform has a 30+1 capacity. It was built in Mount Orab, Ohio, USA.