Home / hide-from-search / CA Compliance Parts And Modifications Add-on UMP CA Compliance Parts And Modifications Add-on UMP$9900 SKU: CACOMPPAKUMP-1 Category: hide-from-search Product ID: 7608 One 10rnd mag block, grip flap and installation CA Compliance Parts And Modifications Add-on UMP quantity Add to cart Description Additional information Description One 10rnd mag block, grip flap and installation Additional information Weight 17 oz Dimensions 12 × 6 × 2 in 922r Qualifying Part YES – Foreign Manufacturer HK Related products Sale! HK UMP 10mm Conversion Kit Bolt and Barrel from: $69900$49900