553-20 553 Lower Receiver
553-07 553 Upper Receiver
553-03 553 Barrel
553-17 553 Bolt Carrier
553-08 553 Upper Receiver Rail
553-36 553 Folding Stock
553-M-04 553 Magazine Main Body
553-02-1 553 Gas Block Assembly
553-02-4 553 Gas Tube Part B
553-05 553 Handguard
553-14 553 Gas Piston and Recoil Rod Assembly
553-15 553 Nozzle
