LMT MARS-L 5.56 AR-15 Rifle - 16"

Manufactured by Lewis Machine & Tool
Manufactured by Lewis Machine & Tool
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Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal-Firearm License holder.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.



This LMT rifle is a one-of-a-kind AR-15 featuring a patented MRP or Monolithic Rail Platform upper receiver that combines the handguard and upper receiver into a single component. CNC machined from a single piece of aerospace-grade aluminum; the LMT MARS provides unmatched functionality. The proprietary LMT locking system of the barrel is the key to this unique modular AR15, using two locking bolts on the right side of the receiver to hold the barrel in place. This unique configuration and integration of the upper receiver and an MRP barrel from LMT create a simple modular platform that allows barrel swaps and caliber changes in only a few minutes with a simple T-30 Torx bit and a torque wrench. 

  • 5.56 NATO
  • 30 Round Magazine
  • 16-Inch Chrome Barrel
  • Single Stage Trigger
  • SOPMOD Stock
  • Ambidextrous Lower
  • Ambidextrous Charging Handle

The LMT Defender boasts a 16-inch chromed barrel with a 1:7 twist that provides excellent ballistics and accuracies and features a full-length 14.25-inch 1913 Picatinny rail giving you plenty of room for your choice of accessories. Because of the integrated handguard, you won't experience point-of-impact shifts using aiming devices attached to the rail on other AR-15 rifles. When you want the best modularity in an AR-15 rifle or need the ability to change barrels or grip panels on the fly, the Defender from Lewis Machine & Tool comes at an affordable price with a modular functionality guaranteed to surprise.

For over forty years, the Lewis Machine & Tool Company has provided commercial customers, law enforcement, and military agencies with weapons and accessories based on a mission statement to deliver only the best precision-engineered quality and weapon systems. In LMT's typical style, the design and engineering teams continue to push the boundaries of innovation with the LMT Defender, a semi-automatic AR-15 rifle with a sixteen-inch barrel firing a 5.56 NATO round.
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Barrel Coating
Barrel Length16
Barrel LiningChrome
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandLewis Machine & Tool
Caliber Gauge5.56 NATO
Muzzle DeviceA2 Flash Hider
Thread Pattern1/2 X 28
Twist Rate1:7

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