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Lewis Machine & Tool
Overview
The Lewis Machine & Tool MRP-L M-Lok Specwar 5.56mm assembled upper receiver is a complete unit designed for the AR-15 platform, featuring an 11.5-inch barrel optimized for 5.56 NATO ammunition. This upper receiver is built with a carbine gas system, which ensures reliable cycling and performance, making it a solid choice for tactical applications and short-barreled rifle builds. It's commonly found in builds that prioritize maneuverability and rapid handling while maintaining effective range.
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Based on build data

Bravo Company Ar-15/m16 Bcm Mil-Spec 6 Position Receiver Extension

Magpul Moe K2 Grip Polymer Gray

Strike Industries Ambidextrous Magazine Release, Black - ARAMBIMRBK

Geissele Automatics Llc Ar-15 Ssa-E X Lightning Bow Trigger

Faxon Chameleon 5.56 Complete Nitride Bolt Carrier Group - FF556BCGCNITRIDE-NCR

Lmt Mars-L Ambidextrous Ar-15 Stripped Lower Receiver
Aggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Bravo Company Ar-15/m16 Bcm Mil-Spec 6 Position Receiver Extension | 2 | |
| Magpul Moe K2 Grip Polymer Gray | 2 | |
| Strike Industries Ambidextrous Magazine Release, Black - ARAMBIMRBK | 2 | |
| Geissele Automatics Llc Ar-15 Ssa-E X Lightning Bow Trigger | 2 | |
| Faxon Chameleon 5.56 Complete Nitride Bolt Carrier Group - FF556BCGCNITRIDE-NCR | 2 | |
| Lmt Mars-L Ambidextrous Ar-15 Stripped Lower Receiver | 2 |
| Platform | Percentage |
|---|---|
| AR-15 | 100% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 100% |
Builds in the community that include the Mrp-L M-Lok Specwar 5.56mm Assembled Upper Receiver - Mrp-L M-Lok Specwar 5.56mm 11.5'''' Assembled Upper Receiver
| Build | Parts | Total |
|---|---|---|
![]() | 21 | $3007.27 |
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