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

AK In The USA
AK In The USA

AKs In The USA: The Current State of the American AK Platform

Despite it being the primary rifle of the enemy for most of its existence, American shooters have nonetheless warmed to the AK platform, creating an unlikely love story.

Demand for Guns, Ammo & Firearm Accessories Accelerates

October gun sales increased according to the National Shooting Sports Foundation (NSSF) estimate, but the quarterly reports from major manufacturers reflect purchases significantly higher.

The Armed Citizen® Nov. 9, 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.

Review: Canik MC9 Prime Radian

This Canik MC9 Prime uses Radian Weapons technology.

Beretta's Behemoth: An Overview of Beretta Holdings

Beretta Holding’s portfolio is so great, both in numbers and marquee value, the list speaks for itself.

What Should Ruger’s Future Revolvers Look Like?

Ruger’s revolvers would benefit from a few updates if the company ever decides to bring them back into production.

Interests



Get the best of American Rifleman delivered to your inbox.