CMMG Banshee 5.7x28mm Upper with 5" Barrel, Black - 57BBCF0AB
Click to see full view
CMMG
Overview
The CMMG Banshee 5.7x28mm Upper features a 5-inch barrel, designed to deliver high-velocity performance in the compact AR-15 platform. As a complete assembly, it simplifies the build process while allowing you to chamber the popular 5.7x28mm caliber, which is known for its flat trajectory and low recoil. This upper is often found in builds aimed at maximizing maneuverability and rapid target acquisition, making it a solid choice for those interested in a lightweight, high-performance setup.
Specifications
CMMG Banshee 5.7x28mm Upper with 5" Barrel, Black - 57BBCF0AB
August 2026 on GunPartPicker
CMMG Banshee 5.7x28mm Upper with 5" Barrel, Black - 57BBCF0AB 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 March 2026. All time, it ranks #80 of the 1,636 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in 5.7x28mm and nearly all AR-15.
It was in stock most days in August 2026, and today 3 of the 5 retailers we track have it in stock. The best price crept up from $764.99 to $847.94 over August 2026. Buying today, the lowest price is $768.99 at Ammunition Depot.
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 20 builds that include this one
Sharps Bros Showdown Stripped Lower Receiver - Black, Unique Design and High-Performance for Custom AR Builds - SBLR11
Timney Triggers Targa Two Stage AR-15 Trigger Long 1ST Stage Straight Bow
San Tan Tactical Enhanced AR-15 Bolt Carrier Group - 5.56 - Nitride
Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black
Fortis SHIFT Vertical Grip - M-LOK
Timber Creek Enforcer AR Pistol Grip, Black - E ARPG Black
Builds Featuring This Part
See all 1 →Builds in the community that include the CMMG Banshee 5.7x28mm Upper with 5" Barrel, Black - 57BBCF0AB
| Build | Parts | Total |
|---|---|---|
 | 8 | $1575.33 |
No reviews yet. Be the first to review this product!