LMT MARS-L Forged Stripped Ambidextrous Lower Receiver
The Lewis Machine and Tool MARS-L stripped lower receiver is an excellent starting point for a hard-use rifle.
The LMT® Modular Ambidextrous Rifle System (MARS®) lower receiver offers ambidextrous controls to include: selector, magazine release and bolt catch and release. An enhanced flared magazine well and ambidextrous magazine and bolt catch mechanisms are machined directly into the receiver and have been designed to function as ergonomically as possible.
This “stripped” version comes only with the ambidextrous components installed.
Features:
- Forged 7075 aluminum
- Hardcoat anodized
- Compatible with Mil-Spec AR-15 lower parts
- Precise tolerances




Thomas C. (verified owner) –
Great lower, fast and easy shipping!
Milton (verified owner) –
Great fast service. And thanks for the Ramen lol
Brian C. (verified owner) –
Been trying to get a LMT Mars-L lower, could not find it anywhere, then I came across RoofTop Defense which had them in stock
I was skeptical at first, but I placed the order and a few days later it was at my FFL location. Great service and happy to have
an item that was impossible to get from other vendors. Thanks RoofTop Defense!
Zach (verified owner) –
Top notch customer service. Quick response to emails for the necessary paperwork to get where it needs to be. The LMT lower was flawless and took two days from purchase to show up, Rooftop even hooked it up with a free lunch, who says there’s no such thing as a free lunch? Wasn’t my first and certainly won’t be my last. Thanks Sol!
Nate (verified owner) –
LMT lowers are renowned as the best lower receivers out there. That being so, they’re not the easiest to find. I was extremely happy to find a supplier like Rooftop Defense who not only stocked plenty of them but also didn’t price gouge on them unlike those found on gunbroker and other online marketplaces. I love that Rooftop also included a copy of the constitution with each of my orders. Props to Rooftop Defense. Over and out!