LMT Monolithic Upper Receiver - AR-15 - MRP-L - M-LOK - Rifle - 13.25"
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Lewis Machine & Tool
Overview
The LMT Monolithic Upper Receiver is a complete assembly designed for the AR-15 platform, featuring a streamlined design that integrates the rail and upper into a single unit. With a barrel length of 13.25 inches, this upper is optimized for compact builds while still providing versatility in handling and accuracy. It is commonly utilized in builds chambered in .223 Wylde, making it a suitable choice for those looking to maximize performance with both .223 Remington and 5.56 NATO cartridges.
Specifications
LMT Monolithic Upper Receiver - AR-15 - MRP-L - M-LOK - Rifle - 13.25"
Available Merchants(4)
Prices checked
Price Alert
September 2026 on GunPartPicker
LMT Monolithic Upper Receiver - AR-15 - MRP-L - M-LOK - Rifle - 13.25" ranked #267 of the 615 upper receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #326 of the 1,879 upper receivers builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 2 of the 4 retailers we track have it in stock. It dipped to $758.99 at KY Gun Company for a stretch in September 2026, well under its usual $940.50, so sales do come around. Buying today, the lowest price is $940.50 at Brownells, above September's low of $758.99, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
Geissele Automatics AR-15/M16 Super Charging Handle, Ddc
LMT MARS-L Ambidextrous AR-15 Stripped Lower Receiver
LMT Full-Auto 5.56 Enhanced AR-15 Bolt Carrier Group
Geissele Automatics Super Semi-Automatic Enhanced SSA-E Two Stage AR-15 Trigger
B5 Systems SOPMOD Enhanced Stock, Multi-Camo Black - SOP-1422
Geissele Automatics Super Precision AR-15/M4 30mm 7075 T6 Aluminum Extended Scope Mount, Hardcoat Anodized Black - 05381B
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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