NRA Gun of the Week: Head Down Firearms HD-15 Master Series

Head Down Firearms is a U.S. manufacturer of small arms that specializes in AR-15-pattern semi-automatics. The company provides both pistols and rifles that feature top-shelf components, assembled and available to the consumer at affordable rates.


The company’s HD-15 18” Master Series is a feature-rich, modern variant of the Stoner design optioned for long-range work. The gun’s upper and lower receivers are matched and machined from billet aluminum. A Picatinny rail is provides for optic mounting and the gun’s handguard is topped with rail for accessories. Additionally, M-Lok slots are given throughout for further attachment of accessories.


Head Down Firearms has outfitted its Master Series with top-shelf components. A Luth AR fully adjustable stock is furnished for a custom user interface. A Mission First Tactical grip is supplied. Head Down provides a 18” chrome-moly steel barrel on our test sample of the HD-15 Master Series. A multi-colored Cerakote finish is provided, a treatment Head Down Firearms is known for. Nitriding is applied to the gun’s bolt carrier group for extreme corrosion protection.


Watch our NRA Gun of the Week video above to learn more about the Head Down Firearms HD-15 Master Series.

Head Down Firearms HD-15 Specifications
Manufacturer: Head Down Firearms
Action Type: direct-gas-impingement-operated semi-automatic, center-fire rifle
Chambering: .224 Valkyrie
Receivers: machined aluminum
Barrel: 18” chrome-moly steel, Nitride finish
Sights: none; Picatinny rail for optics
Trigger: 5-lb., 3-oz. pull
Magazine: 20-round capacity C-Products
Stock: LUTH-AR MBA-1 fully adjustable
Length: 40.13”
Weight: 7 lbs., 15 ozs.
MSRP: $1,999

Further Reading:
A Guide to Precision-Rifle Shooting on a Budget

Tested: Inside The .224 Valkyrie

Uncovering the Secrets to Long-Range Precision Shooting

Long-Range Warriors: The USMC M40 Rifles

Selecting An AR

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