CMMG 10rnd Extension kit for Gen1 FN5.7 Magazines Increases the capacity of a five seven pistol magazine by 10rds. This is NOT compatible with the newest magazines.
IMPORTANT SHIPPING INFORMATION: We cannot ship magazines that hold more than 10 rounds to CA, DC, HI, Cook County IL, IL (rifle), MD, MA, NJ, NY, RI, VT or WA (regardless of if you are a Law Enforcement Officer or not). We cannot ship magazines that hold more than 15 rounds to CO and IL (pistol) or 17 rounds to DE and are unable to ship any magazines regardless of size to CT. We cannot accommodate any requests to disassemble, modify or change items before shipping to make them legal in a certain state. We cannot ship any magazine extension to any state that has capacity limits on magazine size.
IMPORTANT SHIPPING INFORMATION: We cannot ship magazines that hold more than 10 rounds to CA, DC, HI, Cook County IL, IL (rifle), MD, MA, NJ, NY, RI, VT or WA (regardless of if you are a Law Enforcement Officer or not). We cannot ship magazines that hold more than 15 rounds to CO and IL (pistol) or 17 rounds to DE and are unable to ship any magazines regardless of size to CT. We cannot accommodate any requests to disassemble, modify or change items before shipping to make them legal in a certain state. We cannot ship any magazine extension to any state that has capacity limits on magazine size.
