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

by
posted on January 15, 2021
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
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.

Right side rifle black gray metal plastic head down hd-15 master series

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.

close-up rifle receiver action black gray metal aluminum white

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.

gun stock black plastic metal knobs white background

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

Extras:








Latest

CZ 75 Legend 01
CZ 75 Legend 01

The CZ 75 Legend: Rebirth of an Icon

If you make a short list of the most influential handgun designs of the 20th century, the CZ 75 would make the cut. A half century since its introduction, CZ is honoring that legendary status with the CZ 75 Legend.

39 New Rifles for 2026

Today's new rifles run the gamut from the latest and greatest packed with the most up-to-date features money can buy to retro-inspired models that give us a glimpse of the way things used to be if you wanted to send a bullet "over there somewhere."

The Armed Citizen® June 1, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Tactical Belts For The Rest Of Us

Most shooters don’t need a "war belt." While enthusiasts like the idea of preparing for every contingency, the vast majority of us need a reliable platform for a range session, a training class or a local club match.

Review: Trijicon Credo 1-10x28 mm Riflescope

With a 10X magnification range, the Trijicon Credo 1-10x28 mm riflescope is ideal for close-range targets, long-range pursuits and everything in between.

Study Shows Widespread Public Approval for Self-Defense, Recreational Shooting

Research conducted by Responsive Management annually for the Council to Advance Hunting and the Shooting Sports (CAHSS) found that, in 2025, 78 percent of adult residents in the United States believe learning self-defense skills with a firearm is completely acceptable.

Interests



Get the best of American Rifleman delivered to your inbox.