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

French Charleville Ihtog 1
French Charleville Ihtog 1

I Have This Old Gun: The French Charleville Musket

One of the most important military arms ever made, the French Charleville musket saw use in the American Revolution and armed French troops throughout the Napoleonic Wars.

CVA Endura Series: The Modernized Muzzleloader Of 2025

CVA built on the success of its Paramount muzzleloader to create the Endura, a design that the company calls "the most advanced muzzleloader series CVA has ever built."

Review: FN 15 Guardian

FN America has sought to bring its legendary quality and reliability to an AR-15 that lists for just $999, and we believe that it has done this well with its 15 Guardian carbine.

Springfield Armory Hellcat Now Available In .380 ACP

Despite the extensive number of Hellcat models in its lineup, Springfield Armory has only offered the pistol in one chambering, 9 mm Luger, until now. The .380 ACP model offers similar capabilities with softer recoil.

Arms Of The Mail Guard Marines

While difficult to imagine today, brazen armed thefts of the U.S. Mail in the 1920s became all too common and beyond the abilities of mail personnel to handle. Enter the U.S. Marines—armed to the teeth.

The Armed Citizen® Oct. 13, 2025

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

Interests



Get the best of American Rifleman delivered to your inbox.