Knights Armament AR-15 Upper Receiver CQB Mod 2 11.5" Urx 4 M-LOK
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Knights Armament
Overview
The Knights Armament AR-15 Upper Receiver CQB Mod 2 features a stripped assembly designed for builders looking to customize their setups. With an 11.5-inch barrel length chambered in 5.56 NATO, this upper receiver is optimized for close-quarters engagements while maintaining versatility for various shooting scenarios. It is commonly found in builds that prioritize compactness and maneuverability, making it a popular choice for tactical applications.
Specifications
August 2026 on GunPartPicker
Knights Armament AR-15 Upper Receiver CQB Mod 2 11.5" Urx 4 M-LOK ranked #57 of the 690 upper receivers builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #137 of the 1,625 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in 5.56 NATO and nearly all AR-15.
It was out of stock everywhere we track for all of August 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $1,962.99 at BattleHawk Armory for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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