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 added the LMT Monolithic Upper Receiver - AR-15 - MRP-L - Quad-Rail - Carbine - 9.5" to their builds on GunPartPicker. Since April 2026, it ranks #550 of the 2,061 upper receivers builders have added.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 2 of the 3 retailers we track have it in stock. It dipped to $703.36 at KY Gun Company for a stretch in October 2026, well under its usual $890.10, so sales do come around. Buying today, the lowest price is $890.10 at Brownells, above October's low of $703.36, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Builds Featuring This Part
See all builds →Builds in the community that include the LMT Monolithic Upper Receiver - AR-15 - MRP-L - Quad-Rail - Carbine - 9.5"
| Build | Parts | Total |
|---|---|---|
 | 17 | $4149.93 |
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