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Colt
Overview
The Colt M4 LE6933 Upper Receiver Group is a stripped assembly designed specifically for the AR-15 platform, featuring an 11.5-inch barrel chambered in 5.56 NATO. This upper receiver is ideal for builders looking to create a compact, maneuverable firearm that excels in close-quarters situations. It is commonly used in short-barreled rifle (SBR) builds, where a shorter barrel length enhances handling without sacrificing performance.
Specifications
M4 5.56 Upper Receiver Groups - M4 LE6933 Upper Group 11.5" Stripped
Build history on GunPartPicker
Builders on GunPartPicker first added the Colt M4 5.56 Upper Receiver Groups - M4 LE6933 Upper Group 11.5" Stripped to a build in July 2026.
It was out of stock everywhere we track for all of September 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $444.99 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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