Daniel Defense Mk18 SBR-Black

The Daniel Defense MK18 SBR‑Black is known for its compact build and durable construction, featuring the same railed forend supplied by Daniel Defense for USSOCOM programs. At its core is a 10.3″ Cold Hammer Forged barrel, a length that aligns with the barrel design traditionally associated with the MK18 upper, often selected for close‑quarters applications. The Flat Dark Earth MK18 rail system utilizes the well‑established Bolt‑Up System, a design that has undergone extensive testing and has been fielded in more than 15,000 military‑issued units. Engineered for balance, size, and consistency, the Factory MK18 SBR is designed to offer dependable performance. The model is also equipped with Daniel Defense’s updated buttstock and pistol grip, both built for comfort and durability.

Technical Specifications

Lower Receiver:
Mil‑Spec construction with an enhanced flared magazine well and rear receiver QD swivel attachment point. CNC‑machined from 7075‑T6 aluminum and finished with a Type III Hard Coat Anodizing.

Upper Receiver:
Mil‑Spec design with indexing marks and M4 feed ramps. Precision CNC‑machined from 7075‑T6 aluminum and completed with a Type III Hard Coat Anodized finish.

Barrel:
Constructed from Cold Hammer Forged Chrome Moly Vanadium steel, the 10.3″ Government-profile barrel features a 1:7 twist rate, a chrome-lined interior, and a Mil-Spec heavy phosphate finish. It is also HP/MPI tested to ensure quality and durability.

Gas System:
Carbine‑length direct impingement system with a pinned low‑profile gas block machined from 4140 hardened steel and treated with Mil‑Spec heavy phosphate coating.

Muzzle Device:
Daniel Defense flash suppressor constructed from 17‑4 PH stainless steel with a salt bath nitride finish.

Bolt Carrier Group:
M16‑profile BCG, MP tested, chrome lined, and built with a properly staked gas key.

Buffer:
H Buffer.

Handguard:
Daniel Defense MK18 SBR Black RIS II handguard, CNC‑machined from 6061‑T6 aluminum and Type III Hard Coat Anodized.

Receiver Extension:
Six‑position Mil‑Spec receiver extension, made from 7075‑T6 aluminum.

Stock:
Daniel Defense buttstock constructed from glass‑filled polymer with soft‑touch overmolding for comfort.

Grip:
Daniel Defense pistol grip, also made from glass‑filled polymer with soft‑touch overmolding.

Rail Ladders:
Three low‑profile Santoprene rail covers, capable of handling temperatures up to 300°F.

Origin:
Made in the USA.

What’s in the Box

• DD MK18 SBR – Black