LMT MARS-L Ambidextrous AR-15 Stripped Lower Receiver
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Lewis Machine & Tool
Overview
The LMT Mars-L Ambidextrous AR-15 Stripped Lower Receiver is designed for builders looking to create a versatile platform, featuring ambidextrous controls that facilitate operation for both right and left-handed users. This stripped lower is compatible with standard AR-15 components and has a trigger pin diameter of .154, ensuring compatibility with a wide range of trigger assemblies. Builders often integrate this receiver into mid-length gas system builds chambered in 5.56 NATO, making it a solid choice for those aiming for a balance of accuracy and reliability.
Specifications
Available Merchants(5)
Prices checked
Price Alert
October 2026 so far on GunPartPicker
LMT MARS-L Ambidextrous AR-15 Stripped Lower Receiver is the sixth most added lower receiver on GunPartPicker so far in October 2026, behind the PSA AR-15 Blem "Stealth" Stripped Lower Receiver, with about 3% of all lower receivers added to builds. Down from #5 in September. Builds with this lower receiver are mostly chambered in 5.56 NATO (80%, then .223 Wylde 9%), mostly on mid-length gas (60%, then carbine-length 25%), and nearly all AR-15.
It was in stock most days in September 2026, and today 4 of the 5 retailers we track have it in stock. It dipped to $320.99 at KY Gun Company for a stretch in September 2026, under its usual $352.35, so sales do come around. Buying today, the lowest price is $342 at BattleHawk Armory, above September's low of $320.99, 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 hundreds of builds that include this one
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Wilson Combat AR-15 Starburst Gunfighter Pistol Grip Black
LMT Upper Receiver Assembly - AR-15 - M4 - Black Anodize
CMMG AR-15 HD Pivot and Takedown Pin Parts KIT - 55AFF3B
Radian Raptor Charging Handle & Talon Safety Selector Combo - OD Green
B5 Systems Trigger Guard ATG-001-01
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.
Builds Featuring This Part
See all builds →Builds in the community that include the Lmt Mars-L Ambidextrous Ar-15 Stripped Lower Receiver
| Build | Parts | Total |
|---|---|---|
 | 27 | $6492.01 |
 | 16 | $1828.87 |
 | 21 | $2550.02 |
 | 27 | $2205.52 |
 | 28 | $2666.96 |
 | 21 | $3610.31 |
| 12 | $3781.41 |
 | 25 | $3701.15 |
 | 22 | $5914.78 |
 | 8 | $1535.43 |
 | 24 | $6465.84 |
 | 12 | $2320.12 |
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