Colt M4 LE6933ERP Upper Group 11.5in With BCG
Click to see full view
Colt
Overview
The Colt M4 LE6933ERP Upper Group is a complete upper receiver designed for the AR-15 platform, featuring an 11.5-inch carbine contour barrel chambered in 5.56 NATO. Its carbine-length gas system ensures reliable cycling and performance, while the 1:7 twist rate stabilizes a range of bullet weights, making it versatile for various ammunition types. This upper is commonly found in builds focused on compactness and maneuverability, often used for tactical applications or close-quarters engagements.
Specifications
Build history on GunPartPicker
Builders have been adding the Colt M4 LE6933ERP Upper Group 11.5in With BCG to their builds on GunPartPicker since April 2026. All time, it ranks #905 of the 1,636 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 hard to find in August 2026, in stock on only 3 of the 13 days we checked, and today none of the 2 retailers we track has it in stock right now. Prices barely moved in August 2026, holding around $971.99, so there haven't been real sales lately. Listed prices start at $971.99 at KY Gun Company for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 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 12 builds that include this one
Aero Precision M4E1 Complete Lower Receiver W/MOE SL Grip & SL-S Carbine Stock
Radian Raptor Charging Handle & Talon Safety Selector Combo - OD Green
Battle Arms AR-15 Bolt Carrier Group - BADBCGM16TI
Colt M4/M4A1 Replacement Barrel Stripped 14.5in
True North Concepts Aluminum M-LOK GripStop - Olive Drab
Daniel Defense Flash Suppressor - 1/2x28
Builds Featuring This Part
See all 1 →Builds in the community that include the Colt M4 Le6933erp Upper Group 11.5in With Bcg
| Build | Parts | Total |
|---|---|---|
 | 20 | $2197.70 |
No reviews yet. Be the first to review this product!