Wraithworks is set to introduce a new caliber option to its WARP platform, with upcoming .45 ACP models built around a radial delay operating system and compatibility with UMP-pattern magazines. Two configurations are expected: a compact Mini variant with a 5-inch barrel and an HBPDW-style brace system, and a larger pistol version featuring an 8-inch barrel. The move into .45 ACP brings a different performance profile to the WARP lineup, which has previously focused on smaller calibers. Both new models utilize a radial delay system, a design intended to manage recoil impulse and improve cycling characteristics compared to traditional straight blowback systems commonly found in pistol-caliber platforms. The more compact offering, the Wraithworks WARP .45 Mini, is configured with a 5-inch barrel and is designed for maximum maneuverability. It can be paired with an HBPDW-style brace and optional hydraulic buffer system, which is said to further reduce felt recoil and improve overall shooting control in a small package.Stepping up in size, the Wraithworks WARP .45 Pistol features an 8-inch barrel, offering increased velocity and a longer sight radius for users running irons or optics. This configuration maintains the same operating system and magazine compatibility, providing a consistent manual of arms across both models. A key feature across both variants is the use of UMP-pattern .45 ACP magazines. These magazines are widely regarded for their durability and reliability, and their inclusion gives users access to an established ecosystem without requiring proprietary designs. Do you think UMP-pattern magazines add value, or would you prefer something else? The radial delay system itself is becoming more common in modern pistol-caliber firearms, offering a middle ground between simple blowback and more complex gas-operated systems. By delaying bolt movement mechanically, it can reduce wear on components while also softening recoil characteristics, particularly in larger calibers like .45 ACP. While full specifications and availability details are still limited, and real images as well, the introduction of these two models signals Wraithworks’ continued push into modular, compact platforms with alternative operating systems. The addition of .45 ACP, combined with magazine compatibility and compact form factors, positions these new WARP variants as options for shooters looking for a heavier-hitting pistol-caliber system.Here’s a video with some action. Pricing starts from $1,590, and they will be released on September 1, 2026.Quick links for your convenience: Wraithworks WARMP45 8IN Barrel Radial Delay and Wraithworks WARMP45 MINI 5IN Barrel Radial Delay HBPDW.Are you interested in .45 ACP for a platform like this, or do you prefer 9mm?