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KE Arms
Overview
The KE Arms KP-15 Complete Lower Receiver is a fully assembled, mil-spec polymer lower designed for the AR-15 platform. It supports a multi-caliber configuration, allowing builders to easily customize their setups without being restricted to a single cartridge. This polymer lower is lightweight and durable, making it a practical choice for builds that commonly utilize a mid-length gas system.
AR-15 Kp-15 Complete Lower Receivers Mil-Spec Polymer - AR-15 Kp-15 Complete Lower Receiver Mil-Spec Polymer Black
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Prices checked
KE Arms AR-15 Kp-15 Complete Lower Receivers Mil-Spec Polymer - AR-15 Kp-15 Complete Lower Receiver Mil-Spec Polymer Black ranked #148 of the 588 lower receivers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #169 of the 1,222 lower receivers builders have added. Builds with this lower receiver are mostly chambered in 5.56 NATO (77%), split between carbine-length (38%) and mid-length (38%) gas systems, and nearly all AR-15.
It was hard to find in October 2026, in stock on only 8 of the 14 days we checked, and today only AT3 Tactical has it in stock. Prices barely moved in October 2026, holding around $179.96, with no real sale all month. Buying today, the lowest price is $179.96 at AT3 Tactical, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 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 →Check it against the live catalog:
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Ar-15 Kp-15 Complete Lower Receivers Mil-Spec Polymer - Ar-15 Kp-15 Complete Lower Receiver Mil-Spec Polymer Blk
| Build | Parts | Total |
|---|---|---|
![]() | 13 | $1596.82 |
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