HERA Arms Triarii Pistol Stock Conversions for Glock 17 Gen 3 Black. Picatinny rails and the ability to mount AR-15 buffer tubes create high modularity. The rear stock has an adjustable angle that allows for firm comfortable positioning even when wearing a helmet or hearing protection. The locking system and the integrated load-through lever allow the basic weapon to be mounted within seconds. Install your firearm in seconds. The Triarii offers an extremely fast and highly ergonomic platform specially designed for the needs of dynamic shooters. Picatinny rails and the ability to mount AR-15 shafts provide high modularity. Compatible HERA CSS buffer tube and front grip sold separately. Specifications for HERA Arms Triarii Pistol Stock Conversion Kit: Manufacturer: HERA Arms Color: Black Condition Quality: Excellent Fabric/Material: Aluminum Package Contents: HERA Arms Triarii Pistol Stock Conversion Kit What firearm models does the manufacturer say HERA Arms Triarii Pistol Stock Conversion Kit is compatible with? The manufacturer says that HERA Arms Triarii Pistol Stock Conversion Kit is compatible with Glock 19 Gen 4 Walther P99AS Walther P99Q CZ 75 SP-01 Heckler & Koch SFP9 Glock 17 Gen 4 CZ 75 Shadow 2 Glock 17 Gen 3 Glock 19 Gen 3HERA Arms 10.01: Triarii Pistol Stock Conversions for Glock 17 Gen 3 Black