LMT Monolithic Upper Receiver - AR-15 - MRP-L - Quad-Rail - Carbine - 9.5"
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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 9.5-inch barrel and a carbine-length gas system. This A4-style receiver provides a streamlined profile, integrating the upper and handguard into a single unit that enhances rigidity and reduces weight. Builders often choose this upper for compact, tactical builds where maneuverability and stability are priorities.
Specifications
LMT Monolithic Upper Receiver - AR-15 - MRP-L - Quad-Rail - Carbine - 9.5"
Build history on GunPartPicker
Builders have been adding the LMT Monolithic Upper Receiver - AR-15 - MRP-L - Quad-Rail - Carbine - 9.5" to their builds on GunPartPicker since March 2026. All time, it ranks #375 of the 1,642 upper receivers builders have added.
It was hard to find in August 2026, in stock on only 7 of the 20 days we checked, and today 2 of the 3 retailers we track have it in stock. The best price crept up from $696.99 to $890.10 over August 2026. Buying today, the lowest price is $890.10 at Brownells, above August's low of $696.99, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Builds Featuring This Part
See all 1 →Builds in the community that include the LMT Monolithic Upper Receiver - AR-15 - MRP-L - Quad-Rail - Carbine - 9.5"
| Build | Parts | Total |
|---|---|---|
 | 17 | $4151.96 |
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