Mk-18 Mod 1 Mjölnir

338 Lapua Magnum, 338 Norma Magnum, 300 Norma Magnum  Semi-Automatic Rifle

Extreme Distance, Self-Regulating Gas Piston Platform

Patent Pending

MSRP: Call for Pricing 


The Mk-18 Mod 1 Extreme Distance Capable Semi Automatic Rifle was designed to take advantage of the ballistic capabilities of the 338 Lapua Magnum, 338 Norma Magnum and 300 Norma Magnum cartridges. The system provides extreme distance capability in a light weight and mobile semi-auto platform. Utilizing SWORD’s proprietary short stroke piston system the rifle is precise, reliable, and durable. Featuring ambidextrous controls, ergonomic features, and built in modularity, the MK18 is a great choice for the avid hunter, long range enthusiast, and competition shooter.

The Set Up:

Patent Pending Tuned Compensator

  • Perfectly tuned to remove muzzle flip and to help reduce recoil.

Cut Rifled and Black Nitride Coated Barrel

  • Manufactured with Precision Single-Point Cut Rifled Barrels and Nitride coated to allow for maximum accuracy and durability. The Mk-18 has been accuracy tested to 1/2 MOA.
  • Barrel Length – 24″ 1:9.35 Twist Barrel (338 Lapua Magnum, 338 Norma Magnum)
  • Barrel Length  – 20″ 1:8 Twist Barrel (300 Norma)

Proprietary Self-Regulating Piston System

  • Piston system removes carbon fouling from the upper receiver and bolt carrier assembly. Self regulating means no gas setting and the ability to run a wide range of ammo.

M-Lok Compatible Rail System

  • Free floated to maximize accuracy, simple removal procedure for piston maintenance and flexibility to add mounting solutions.

Rugged Black Nitrided Bolt Carrier Assembly

  • Machine on precision CNC machines out of special material and coated in Black Nitride the Mk-18’s bolt carrier is functional, durable, and aesthetically pleasing.

Ambi-Bolt Catch/Release Pad

  • Located near the lower/front portion of the trigger well. The bolt catch release pad makes locking or releasing the bolt easy with your trigger finger. Left and right handed operators can manipulate it without giving up fire control or moving their support side hand.

Ambi- Magazine Release Buttons

  • Located on opposing sides of the lower receiver, the ambi-magazine release buttons allow left and right handed operators to drop the magazine with their trigger finger and without giving up fire control.

Tungsten Filled Heavy Buffer

  • Weighted and tuned specifically for the Mk-18’s rate of return.

Piston Rated Heavy Action Spring

  • Heavy duty and durable, this action spring is perfectly tuned and rated for the Mk-18’s rate of return.

Mjölnir is the hammer of Thor, a major Norse God associated with thunder. Mjölnir is depicted in Norse mythology as one of the most fearsome weapons, capable of leveling mountains. Translated it means that which smashes, a perfectly suited name for the Mk-18 Mod 1 Semi Automatic 338 Lapua Magnum, 338 Norma Magnum, 300 Norma Magnum.

Tech Specs:

Operating System: Short Stroke Gas Piston System

Caliber: .338LM, .338NM, 300NM

Weight: 12.25lbs W/O Magazine, 13.25lbs W/ Unloaded Magazine

Magazine: 10 Round Aluminum Magazine

Length: 49″ Muzzle to end of stock (338 Lapua/Norma) 45″ Muzzle to End of Stock (300 Norma)

Height: 8″ Top of upper receiver to bottom of pistol grip

Coatings: Milspec Type 3 Hardcoat Anodize- Coyote Brown

MSRP:  Call for Pricing 

Media Coverage | January 21, 2016 | January 14, 2014 | January 14, 2014 | January 13, 2014

GunnyTime |  Season 2015, Episode 110 – Future Counter Terrorism


SWORD International Accuracy Commitment:

SWORD International ensures each Mk-18 weapon system is tested at 300 yards using match-grade ammunition. Each weapon system is certified to shoot 1 MOA (3.141”) at 300 yards.


Though we are confident that each weapon system is capable of shooting sub MOA accuracy, we cannot guarantee every end-user proficiency level, optic quality, mounting solution, platform familiarity and ammunition is capable of taking advantage of that accuracy. The end-user should be aware that the above listed factors; as well as environmental variables can greatly affect accuracy



SWORD international Inc.

610 E. Glendale Ave

Sparks, NV 89431

Phone: (775) 343-1090



Cart Item Removed. Undo
  • No products in the cart.

Pin It on Pinterest

Share This