Scott, Yes the BANSHEE™ 200, MKGS, 9MM upper incorporates the CMMG patent pending radial delayed blowback system

Scott, I would get accurate information from CMMG Customer Service at PHONE 660-248-2293. ---- ((Specifications and Features)): - CMMG Inc. Banshee 200 MkGs AR-15 Style Semi Automatic Pistol 99A51D7 - Blowback System - 9mm Luger - 8" 4140 Chrome-Moly Steel Barrel with Salt Bath Nitride Finish - Medium Taper - 1:10 Twist - Threaded Muzzle 1/2x28 - CMMG A2 Compensator Muzzle Device - Forged 7075-T6 Aluminum M4 Type Upper Receiver - Forged 7075-T6 Aluminum Lower Receiver - CMMG RML7 M-LOK Free Float Hand Guard - Full Length Picatinny Top Rail - Magpul MOE Polymer Pistol Grip - Single Stage Mil-Spec Trigger - CMMG Mil-Spec Charging Handle
CMMG Standard RipBrace with 6 Position Enhanced Receiver Extension and Ambi Sling Plate
Trigger Guard Integrated Into Lower - CMMG Mil-Spec Safety Selector - GLOCK Compatible Magazine Well - 33 Round Magazine - Overall Length 24.4" (Brace Collapsed) - Overall Weight 5lbs 12oz (Unloaded) - Hard Coat Anodized Finish on Receivers/Hand Guard - Matte Black Finish.