Knights Armament AR-15 Upper Receiver Mod 2 16" Urx 4 M-LOK
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Knights Armament
Overview
The Knights Armament AR-15 Upper Receiver Mod 2 16" Urx 4 M-LOK is a upper receiver. Compare prices from multiple merchants and find the best deal.
Specifications
Knights Armament AR-15 Upper Receiver Mod 2 16" Urx 4 M-LOK
Available Merchants(1)
Prices checked
Stock Alert
October 2026 on GunPartPicker
Knights Armament AR-15 Upper Receiver Mod 2 16" Urx 4 M-LOK ranked #360 of the 844 upper receivers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #866 of the 2,053 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in 5.56 NATO, split between mid-length (50%) and rifle-length (50%) gas systems, and nearly all AR-15.
Today the one retailer we track is out of stock. Listed prices start at $1,918.62 at Brownells for when it comes 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 the builds that include this one
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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