The Wraithworks WARP15 Upper (brand part no. WARP15-UP-S) is an innovative AR-15 upper receiver system that combines the receiver and handguard into one lightweight, durable package. At its core is a precision-machined aluminum trunnion that secures the barrel, front takedown pin, and gas system in perfect alignment, surrounded by a fiber-reinforced nylon clamshell construction with brass overmolded inserts secured by 6-32/9-32 hardware. That combination delivers strength exactly where it is needed while dramatically cutting weight. The system is designed to pair with the KE Arms KP-15 polymer lower receiver from the well-known What Would Stoner Do (WWSD) project, and this version ships as a stripped upper, so barrel and bolt carrier group are sold separately.

Key Specifications

• Combines the receiver and handguard into one integrated, lightweight package.
• Precision-machined aluminum trunnion secures the barrel, front takedown pin, and gas system in alignment.
• Fiber-reinforced nylon clamshell construction with brass overmolded inserts.
• Secured with 6-32/9-32 hardware.
• Barrel swaps and service require only basic hand tools.
• Designed to pair with the KE Arms KP-15 polymer lower receiver.
• Sold as a stripped upper, without a barrel or bolt carrier group.

Frequently Asked Questions

Does this include a barrel? No, this is a stripped upper; the barrel and bolt carrier group are sold separately.

What lower receiver is this designed for? It is designed to pair with the KE Arms KP-15 polymer lower receiver.

Buy the Wraithworks WARP15 Polymer Stripped Upper

Shaving weight without giving up strength is the whole idea behind the WARP15’s trunnion-and-clamshell design, especially paired with a KP-15 lower. Browse more AR15 uppers from Wraithworks and order it from our Lubbock, Texas gun shop as soon as it’s ready to ship.