Red Head 721

1 – Barrel Extension, 2 – Barrel Assembly, 3 – Piston W/Ring, 4 – Piston Ring, 5 – Breech Plug, 6 – Breech Block, 7 – Firing Pin, 8 – Sear, 9 – Sear & Trigger Bar Pin, 10 – Sear Spring, 11 – Firing Pin Spring, 12 – Handle & Firing Pin Spring, 13 – Trigger Bar, 14 – Trigger Pin, 15 – Rubber Handle, 16 – Trigger Spring, 17 – Trigger Bar Spring, 18 – Trigger, 19 – Handle Assembly, 20 – Stop Pin Cover, 21 – Barrel Stop Pin, 22 – Barrel Stop Pin Spring, 23 – Rubber Bumper, 24 – Stop Pin Cover Screw & Lock Washer, 25 – Barrel Set Screw, 26 – Breech Block Spring, 27 – Breech Spring Pin, 28 – Spall Guard