Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
Is this the radial delay bolt carrier group? Expert Answer

Yes, the CMMG 9mm 8in Banshee Upper Group Receiver uses the CMMG Radial Delay Blowback system which features a softer recoil impulse and reduced bolt weight compared to traditional straight blowback systems.

by Ethan, Gear Expert, January 4, 2024
Does this come with bolt carrier for 9mm? Expert Answer

Yes, the CMMG 9mm 8in Banshee Upper Group Receiver will include a BCG and charging handle.

by Ethan, Gear Expert, November 23, 2022
Customer Reviews
Helpful Positive Review great quality by LSTD, Verified Owner, March 18, 2023
CMMG products never disappoint, and optics planet, as always, have great customer service. When the item I ordered was not available a suitable replacement was offered with quick response and delivery.
2/2 found this helpful
Most Recent Reviews Great Size by Todd Cundiff, Verified Owner, February 16, 2025
This is a great choice if you are building a 9mm pistol. Pleanty of room for your hand and mount a light. I also bought the 5" and i like it but prefer the 8. Very accurate all the way out to 100 yards.
Most Recent Reviews Would buy it again by Andy, Verified Owner, October 14, 2024
Easiest way to put it is that I would buy it again and again for my 9mm SBR
Most Recent Reviews Great upper by Critter, Verified Owner, April 16, 2024
Super nice fit and finish, great price and very fast . 8 inch barrel is just the right length, still not a ton of real estate if your running a light, back up sights and my only knock is you will need to attach a qd mount as none are provided. Overa...
Read More...
Read All 4 Reviews
Caliber: 9mm Luger Overall Length: 16.5 inBarrel Length: 8 inBarrel Profile: Medium Tapered Barrel Twist Rate: 1-10 Threads per Inch: 1/2x28 Muzzle Device: CMMG Zeroed Linear Compensator Color: Coyote Tan Condition: New

Code: 2CM-URC-CP14-99B518D-CT

MPN: 99B518D-CT

UPC: 810097505667

List: $924.95Save $84.96
$839.99

Product Info for CMMG 9mm 8in Banshee Upper Group Receiver

Combining carbine-like ballistic performance and compact size, this 8 BANSHEE upper group is what you need for the ultimate 9mm AR. Not only does this 9mm upper utilize CMMGs RDB technology, but shooters also have a number of lower/magazine pairing options. CMMG 9mm uppers work with standard AR15/Mk4 lowers and 9 AR Conversion Mags as well as a number of our pistol magazine lowers: Mk9 (Colt-pattern mags), MkGs (Glock-pattern mags), Mk17 (Sig P320 mags).image

WARNING: California`s Proposition 65

Specifications for CMMG 9mm 8in Banshee Upper Group Receiver:

Manufacturer: CMMG
Caliber: 9mm Luger
Overall Length: 16.5 in
Barrel Length: 8 in
Barrel Profile: Medium Tapered
Barrel Twist Rate: 1-10
Threads per Inch: 1/2x28
Muzzle Device: CMMG Zeroed Linear Compensator
Color: Coyote Tan
Fabric/Material: 6061-T6 Aluminum
Gun Rail: M-LOK
Gun Make: CMMG
Weight: 3 lb
Condition: New
Magazine Included: No
Mount Type: M-LOK

Package Contents:

  • CMMG 9mm 8in Banshee Upper Group Receiver

CMMG 9mm 8in Banshee Upper Group Receiver Orderable Models

List of Orderable Models

CMMG 9mm Banshee Upper Group Receiver, 8in, Coyote Tan, 99B518D-CT , MPN: 99B518D-CT , UPC: 810097505667 , Code: 2CM-URC-CP14-99B518D-CT

CMMG 9mm 8in Banshee Upper Group Receiver Unavailable & Discontinued Models

List of Unorderable Models

DEMO, CMMG 9mm Banshee Upper Group Receiver, 8in, Tungsten, 99B518D-TNG , MPN: 99B518D-TNG-DEMO , Code: 2CM-URC-CP14-99B518D-TNG-DEMO
CMMG 9mm Banshee Upper Group Receiver, 8in, Sniper Grey, 99B518D-SG , MPN: 99B518D-SG , UPC: 810097505681 , Code: 2CM-URC-CP14-99B518D-SG
CMMG 9mm Banshee Upper Group Receiver, 8in, Titanium, 99B518D-TI , MPN: 99B518D-TI , UPC: 810097505698 , Code: 2CM-URC-CP14-99B518D-TI
CMMG 9mm Banshee Upper Group Receiver, 8in, Midnight Bronze, 99B518D-MB , MPN: 99B518D-MB , UPC: 810097505674 , Code: 2CM-URC-CP14-99B518D-MB
CMMG 9mm Banshee Upper Group Receiver, 8in, Tungsten, 99B518D-TNG , MPN: 99B518D-TNG , UPC: 810097505704 , Code: 2CM-URC-CP14-99B518D-TNG
Compare (0)