The LMT Defender-L in 5.56 NATO is an entry-level Lewis Machine and Tool rifle built on the company’s patented Monolithic Rail Platform (brand part no. MLCDFDR). The upper is milled from a single aluminum forging and carries a 14.5-inch Picatinny top rail with M-LOK attachment points on the other sides. A 16-inch barrel, a direct impingement gas system and a 30-round magazine make it a practical general-purpose AR. LMT ships it with an owner’s manual in black.

Key Specifications

• The chambering is 5.56x45mm NATO, the standard AR-15 cartridge.
• The barrel is 16 inches, a common length for a handy, general-purpose rifle.
• The rifling twist is 1:7, suited to the heavier bullets common in 5.56 loads.
• Capacity is 30 rounds, and the rifle includes one magazine.
• The operating system is direct impingement, a lightweight, proven gas system.
• The trigger is single stage, a straightforward trigger for range and field use.
• The upper is the MLC monolithic upper receiver, milled from a single aluminum forging so the barrel can be changed without losing zero.
• The rail system is M-LOK on the sides and bottom, with a 14.5-inch Picatinny top rail.
• The lower receiver has a textured grip, M4-style stock and a dry film lubricant coated extension tube.
• The rifle comes with an S-A bolt carrier group and tactical charging handle.

Frequently Asked Questions

What is the Monolithic Rail Platform? LMT’s patented upper is milled from a single high-grade aluminum forging, and two locking bolts hold the barrel extension in place so the barrel can be removed quickly.

What rail system does the Defender-L use? It has a 14.5-inch Picatinny top rail, and the remaining sides provide M-LOK attachment points.

What does the Defender-L include? It ships with a magazine and an owner’s manual.

Buy the LMT Defender-L 5.56 NATO Rifle

The Defender-L brings LMT’s monolithic upper into a more approachable rifle. Order the LMT Defense Defender-L from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more AR rifles while you are here.