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Lewis Machine & Tool
Overview
The LMT MARS-LS PDW Complete Ambidextrous AR-15 Lower Receiver is a lower receiver. Compare prices from multiple merchants and find the best deal.
LMT MARS-LS PDW Complete Ambidextrous AR-15 Lower Receiver was the eighth most added lower receiver on GunPartPicker in August 2026, behind the LMT MARS-L Ambidextrous AR-15 Stripped Lower Receiver, with about 2% of all lower receivers added to builds. Up from #9 in June and July. Builds with this lower receiver are mostly chambered in 5.56 NATO (78%, then .223 Wylde 15%), mostly on mid-length gas (69%, then carbine-length 21%), and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today both retailers we track have it in stock. It dipped to $908.10 at Brownells for a stretch in August 2026, well under its usual $1,019.70, so sales do come around. Buying today, the lowest price is $1,019.70 at Brownells, above August's low of $908.10, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every lower receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Lower Receiver Trends →The part most often added in each category by the 628 builds that include this one
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Lmt Mars-Ls Pdw Complete Ambidextrous Ar-15 Lower Receiver
| Build | Parts | Total |
|---|---|---|
 | 23 | $2419.45 |
| 15 | $4888.72 |
 | 24 | $7090.04 |
 | 15 | $4089.55 |
 | 14 | $4548.56 |
 | 30 | $7764.02 |
 | 16 | $3720.70 |
 | 12 | $6131.72 |
 | 9 | $3500.99 |
 | 14 | $3346.41 |
 | 14 | $2438.05 |
 | 9 | $2848.83 |
3 global ratings
Top reviews
LMT MARS-LS PDW lower mates to a Colt or BCM upper with zero gap, you can pivot the takedown pin with no rattle. The ambi controls feel identical on both sides which is what you want. LMT trigger that comes with it is crisp. Premium lower price but warranted.
LMT MARS-LS PDW lower has top notch machining throughout. Mate to any quality upper has zero play. Ambi controls work without modification. PDW version comes with LMT trigger which is crisp. Premium lower that earns its price.
LMT MARS lower is the benchmark for ambi controls. Mag release, bolt catch, safety all work on both sides without any modification. Mate to any quality upper has zero play. PDW version comes complete with the LMT trigger which breaks at 5 pounds clean.
