LMT MARS-L Ambidextrous AR-15 Stripped Lower Receiver

Manufactured by Lewis Machine & Tool
Manufactured by Lewis Machine & Tool
1 Review

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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.



The Lewis Machine and Tool MARS-L is a fully ambidextrous AR-15 lower receiver. It comes partially assembled with an ambidextrous magazine and bolt release and safety selector, so all you need to add is your favorite trigger, pistol grip, trigger guard, and takedown pins. The LMT MARS-L lower receiver is the perfect start to your dream AR-15 build. It is forged from 7075-T6 aluminum and hardcoat anodized for maximum durability. This stripped lower receiver is built to Mil-Spec dimensions to ensure a proper fit with other upper receivers and components. The ambidextrous magazine and bolt catch are machined directly into the receiver and are designed to be as ergonomic as possible. With the Lewis Machine & Tool MARS-L lower, you are one step closer to finishing your build.

  • Forged from 7075-T6 Aluminum
  • Hardcoat anodized
  • Ambidextrous magazine/bolt release and safety pre-installed
  • Compatible with Mil-Spec parts and upper receivers
  • Color-filled selector markings

Lewis Machine & Tool is dedicated to provided civilians the same level of quality that they have been providing law enforcement and military for years. With precision manufacturing and rigorous quality assurance, an LMT Defense product will always work when it needs to.
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BrandLewis Machine & Tool
Caliber Marking5.56 NATO
FinishHardcoat Anodized
Receiver Material7075-T6 Aluminum
Trigger Pin DiameterMIL-SPEC .154
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

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The perfect core for a premium build


There are tons of lowers that can be had for much less, so why spend the cheddar on this premium LMT?

Because you really do get what you pay for. Smooth. Solid. Sleek. Fully ambi. And when mated to a LMT upper, what you end up with is absolute magic.

Not only is my built LMT a sub-moa masterpiece, it'll do so with even mediocre range blasting fodder.