LA Capa Customs “Turbo” 7075 Blowback Unit for Hi Capa - Silver Slide the silver adjustable retention grub

the silver adjustable retention grub screw on the outside edge of your pistol magazine carrier allows you to fine-tune the fit according to your preferences

or if the magazine is empty

Spring x 1pc

- For UMAREX GHK GLOCK 17 GBB Pistol Series

1 - Orange

LA Capa Customs “Turbo” 7075 Blowback Unit for Hi Capa - Silver Slide the silver adjustable retention grubThe Turbo blowback unit is the LIGHTEST blowback unit on the market, coming in at just 12. 9 grams. The cylinder is designed to house two o rings to allow for better gas efficiency and consistency. The 7075 aluminum construction and 12 unique anodized colors allows for durability and customization. It also has a low blowback insert piece and special bottom ramp so the hammer never catches under the BBU. Light WeightAluminum 12. 9 Grams