The C&H V4 Adapter for Holosun 509T, Glock MOS, STL. GL-509T-ST is a top-quality product manufactured by the prestigious brand C&H Precision Weapons. Designed specifically for Holosun 509T, Glock MOS, STL handguns, this adapter is the perfect accessory for enhancing the versatility and functionality of your firearm. With its durable construction and precise engineering, it ensures a secure and precise mounting of the Holosun 509T optic onto your Glock MOS, STL handgun. Add this adapter to your collection and experience improved accuracy and performance. Shop now in the 'Shop All' category and elevate your shooting experience with the C&H V4 Adapter for Holosun 509T, Glock MOS, STL. GL-509T-ST.