Knights Armament AR-15 Upper Receiver CQB Mod 2 11.5" Urx 4 M-LOK
All Knights Armament upper receivers
Click to see full view
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
Knights Armament AR-15 Upper Receiver CQB Mod 2 11.5" Urx 4 M-LOK
October 2026 on GunPartPicker
Knights Armament AR-15 Upper Receiver CQB Mod 2 11.5" Urx 4 M-LOK ranked #170 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 #146 of the 2,051 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in 5.56 NATO, nearly all on carbine-length gas, and nearly all AR-15.
It was out of stock everywhere we track every time we checked in October 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 37 retailers
Not sure which upper receiver to pick?
We ranked every upper receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: Most Popular AR-15 Upper Receivers →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the builds that include this one
Knights Armament Sr-15 Iws Lower Receiver Complete
Magpul AR-15 MOE-SL Stock Collapsible Commercial Black
Aimpoint Micro T-2 Red Dot Sight with 2 MOA Dot Matte Black
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Knights Armament 5.56 MCQ-1 Suppressor FDE
Geissele Automatics Urg-I Airborne Charging Handle - Ddc
No reviews yet. Be the first to review this product!