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




Chunchang c. (verified owner) –
Very detailed work
Steve H. (verified owner) –
I ordered a LMT MARS-L Forged Stripped Ambidextrous Lower Receiver. What can I say about this LMT product that most do not already know? Right! So. let’s talk about Rooftop Defense’s customer service – extremely professional, polite, and on-point (CS is ALWAYS a big thing with me, especially when ordering expensive products online. Not to worry though, Rooftop’s fulfillment process is quick and reliable and I will definitely be doing business with them again.
Will (verified owner) –
As expected from LMT. Great product, very well built and the ambi features are awesome.
Ordered from rooftop Thursday. It was at my FFL and in my hands on Monday. True sweatshop speed!
Sean G. (verified owner) –
Really happy with my purchase. Machining on the lower looked good and no issues with fitment. Shipping was very fast, too.
Vernon S. (verified owner) –
First time ordering from Rooftop Defense. I placed my order on Friday and picked up my LMT lower receiver on Monday. It was in perfect condition.Thank you SOL and ABBIE for great service and the military discount. I look forward to buying from you guys again.