Sylvan Arms Raptor, Universal Pistol Speed Loader, 9MM-45ACP, Black SPL100 The Raptor is designed for use on virtually all types of pistols" single and double stack magazines" 9mm" .357 Sig" 10mm" .40 and .45ACP caliber" as well as 1911 handguns. Load every round quickly and painlessly" each and every time! The Raptor's unique spring-loaded wings give it added stability with thin magazines than competing products.