NRA Gun of the Week: Del-Ton Sierra 316L MLOK

by
posted on April 2, 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. **
What began in North Carolina as a parts and accessories supplier for America’s modern sporting rifle, Del-Ton Inc., now supplies a full lineup of turn-key, semi-automatic rifles. The company’s Sierra 316L, subject of this week’s video preview, provides the versatility of a modernized AR-15 platform while maintaining a cost-conscious approach.

Right side black rifle with text on image noting make and model "Del-Ton Sierra 316L MLOK"

Del-Ton supplies 7075 T6 aluminum, forged upper and lower receivers that are hardcoat anodized for a matte black finish. The flat-top upper is configured for right-hand ejection, along with a forward assist mechanism and ejection port cover.

Man bearing down on black-colored rifle on white shooting range.

The Sierra 316L features a 15” handguard, and thanks to Magpul’s MLOK mounting system, users can simply accessorize as needed. Del-Ton supplies a lightweight profile, 16” barrel. A twist rate of 1 in 7” is supplied and the barrel is threaded and fixed with a birdcage-style flash hider.

Close-up gun trigger and black metal receiver parts.

The gun’s lower is configured with standard, no-frills controls; a two-position safety selector is found on the left and on the right side is a magazine release button. The gun’s mil-spec buffer tube is fitted with a five-position collapsing buttstock. Provisions for sling attachment are found here, too.

Black plastic buttstock for rifle.

Watch our NRA Gun of the Week video to learn more about the Del-Ton Sierra 316L MLOK.

Del-Ton Sierra 316L Specifications
Manufacturer: Del-Ton Incorporated
Action Type: direct-gas, impingement-operated, semi-automatic rifle
Chambering: 5.56x45 mm NATO
Receivers: forged 7075 aluminum
Barrel: 16” lightweight profile
Handguard: 15” MLOK compatible
Magazine: 30-round detachable box
Sights: none; Picatinny rail for optics
Length: 36.375”
Weight: 6 lbs., 3 ozs.
MSRP: $675

Further Reading:
Selecting An AR

AR-15 Budget Build: DIY

The First Colt AR-15 Rifle

Muzzle Devices 101

A Look Back At The M1911 Double-Stack

Latest

jammed cartridge in chamber
jammed cartridge in chamber

Rifleman Q&A: Understanding a Firearm's Cycle of Operation

The cycle of operation is the mechanical sequence of events that it takes to fire one shot out of a firearm. If one of those steps fails to take place as designed, there is an interruption in the cycle of operation and the gun stops firing.

Review: Sightmark Pinnacle 1-6x24 mm Riflescope

Looking for a performance LPVO without the usual associated cost? The Sightmark Pinnacle 1-6x24 mm might be your answer.

Myths & Misunderstandings About the “Modern Fighting 1911”

The Colt Model 1911 pistol and its derivatives are among the most iconic military handguns ever made. But in 2026, does the M1911 still hold up as a quality defensive arm?

Heir Apparent: The CZ 600+ Carbine

CZ's 527 action was long a popular option scaled around compact cartridges like the .223 Remington and the 7.62x39 mm. Now, the new CZ 600+ Carbine brings that same concept to the company's new CZ 600 series.

I Carry: Smith & Wesson Model 386 Night Guard in an ANR Design Holster

In our latest "I Carry" setup, we're featuring the Smith & Wesson Model 386 Night Guard in an ANR Design holster, and we've got a Streamlight EDC flashlight to round out our kit.

The Armed Citizen® Oct. 23, 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.

Interests



Get the best of American Rifleman delivered to your inbox.