Smith & Wesson M&P15 Complete Lower 5.56x45mm/.223 Remington, Black - 812002
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Smith & Wesson
Overview
The Smith & Wesson M&P15 Complete Lower is a fully assembled lower receiver designed for the AR-15 platform, specifically chambered in 5.56 NATO. Constructed from durable 7075-T6 aluminum and finished in black, this lower receiver provides a solid foundation for your build, ensuring compatibility with a wide range of upper receivers and accessories. This complete lower is commonly found in mid-length gas system builds, making it a versatile choice for both tactical and recreational applications.
Specifications
Smith & Wesson M&P15 Complete Lower 5.56x45mm/.223 Remington, Black - 812002
Available Merchants(6)
Prices checked
Price Alert
October 2026 so far on GunPartPicker
Smith & Wesson M&P15 Complete Lower 5.56x45mm/.223 Remington, Black - 812002 is the most added lower receiver on GunPartPicker so far in October 2026, ahead of the Wilson Combat AR-15 Lower Receiver Forged, with about 11% of all lower receivers added to builds. That's its 2nd straight month at #1. Builds with this lower receiver are mostly chambered in 5.56 NATO (88%), mostly on mid-length gas (64%, then carbine-length 25%), and nearly all AR-15.
It was in stock most days in September 2026, and today 4 of the 6 retailers we track have it in stock. It dipped to $269.99 at Sportsmans Outdoor Superstore for a stretch in September 2026, well under its usual $329.99, so sales do come around. Buying today, the lowest price is $339.20 at Classic Firearms, above September's low of $269.99, 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 thousands of builds that include this one
Bravo Company Manufacturing 5.56 NATO Mid-Length Bhf AR-15 Barreled Upper - MCMR-15 - 16"
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Magpul AR-15 MOE Stock Collapsible Mil-Spec Black
EOTECH 3x30.5mm X 21.6mm Holographic Hybrid Green Dot Sight - HHSGRN
Radian Raptor Charging Handle & Talon Safety Selector Combo - OD Green
Bravo Company M16 Bolt Carrier Group Black
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 Smith & Wesson M&P15 Complete Lower 5.56x45mm/.223 Remington, Black - 812002
| Build | Parts | Total |
|---|---|---|
 | 13 | $2702.69 |
 | 5 | $772.18 |
 | 8 | $1333.55 |
| 16 | $4862.32 |
 | 12 | $5418.81 |
 | 8 | $3465.84 |
 | 27 | $2333.45 |
 | 8 | $1530.08 |
 | 11 | $1611.30 |
 | 18 | $4451.41 |
| 10 | $1641.93 |
 | 6 | $832.42 |
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