no it does not require assembly. It will come complete Omni Hybrid P4B Features:
- Patented Omni Hybrid Upper Receiver with Front & Rear Metal Inserts
- Patented Omni Hybrid Lower Receiver with Front & Rear Metal Inserts
- Nano Composite Parts Kit
- 7.5" 1:7 Twist Nitride M4 5.56 x 45mm Barrel
- 7" Keymod Free Float Rail
- Low Profile Gas Block
- Standard AR Pistol Buffer Tube for use with most Braces
- 30 Round Magazine

Jason, no assembly is required. It comes fully assembled from the factory as pictured here : ---- google.com/search?q=ATI+Omni+Hybrid+Maxx+P4+AR+Pistol,&source=lnms&tbm=isch&sa=X&ved=0ahUKEwje-OWEzNTgAhUuVd8KHbEwAQUQ_AUIDygC&biw=1280&bih=596#imgrc=_0zxnN-J57835M:
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