LMT MARS-H 20″ 6.5CM DMR ARCA MLOK Rifle
New for 2026, the MARS-H DMR rifles now have an ARCA interface integrated into the handguard.
Utilizing the LMT® patented Monolithic Rail Platform, MRP™. The only true monolithic rail platform, milled from a single solid piece of aerospace aluminum forging. It utilizes two locking bolts accessible from the side of the receiver to lock in the barrel extension. This patented technology engages the barrel extension for a full 360 degrees around the extension and makes the barrel removable within seconds with a return to zero of the same barrel. One receiver can utilize numerous barrels of varying length, material, and caliber.
Based off our 15.3″ MRP-H M-LOK upper receiver, now featuring an integrated ARCA rail at the rear of the handguard. The upper receiver has 22″ of picatinny rail on the 12 o’clock position while the remaining 7 sides provide M-LOK compatible attachment points.
MARS-H barrels utilize a low profile gas block and straight gas tube. They possess proprietary coating and are cryogenically treated for long term durability.
The MARS-H ambidextrous lower receiver features our EDM machined two-stage trigger, winter trigger guard, endplate with QD swivel point, LMT® ergonomic textured grip, and SOPMOD stock. The ambidextrous features include bolt catch and release, magazine catch, and safety selector. As with all LMT® lower receivers, the extension tube is coated with dry film lubricant.
This weapon system comes complete with magazine, owner’s manual, and 3 rail panels
Specifications
Barrel: 20″ 1:8 Twist
Caliber: 6.5 Creedmoor
Regulations
This is a regulated item and requires shipment to a Federal Firearms License holder. After you have placed your order, please have your order number and a copy of your preferred store’s FFL emailed to info@rooftopdefense.com to avoid delays. After I have received their FFL, I will ship your order as soon as possible!
Jhouston –
Purchased this rifle over 3 years ago, just realized I never left a review,exceeded expectations! Shot .5 moa with factory Hornady Black 6.5cm ammo at 1000 yards. Did not expect this type of accuracy from an AR 10 rifle with basic ammo. As for rooftop, I do not know these ppl at all but I have 100% received top notch service all these years. They are the standard and I will continue to give them my business long as my wallet will allow.
Lou R. (verified owner) –
Great price and quick shipping. I ordered this on a Tuesday and it was at my FFL on Thursday. My only, I wouldn’t say complaint, but maybe suggestion is I wanna see some variety in the ramen noodles. Let’s see some Shin or Neoguri or Samyang.
But really, Sol is a baller, shot caller, with 20” blades on the impalar.
Dane B. (verified owner) –
Sol and the Rooftop Defense team were fantastic! I gave the FFL transfer details in the morning and it was shipped out that afternoon. The gun arrived in pristine condition. I couldn’t be happier with my experience. Now to go take this rifle through its paces. Cheers!
G. Brady s. (verified owner) –
I can’t really review the gun as I haven’t shot it yet but it’s a LMT. My review is actually about Sol and company. I emailed him on Wednesday and he promised I’d have it on Friday. I did, doesn’t get any better than that.
G. Brady s. (verified owner) –
I can’t really review the gun as I haven’t shot it yet but it’s a LMT. My review is actually about Sol and company. I emailed him on Wednesday and he promised I’d have it on Friday. I did, doesn’t get any better than that.