Pics shows FSB with pin - other items not included. (choke, '74 brake, cleaning rod & bayo) The choke has 24mm external threads, the brake is bored out to clear 410 ammo. Also to use the cleaning rod you need to cut a small notch in the bottom of the gas block where the factory handguard screws on.

This front sight block will pin-on and comes with all hardware to install it. Included are barrel pins and drill bits. It also features an indexing pin for brakes and hiders and cleaning rod holder/bayo lug. It's designed to work with the Press-On Upper Assembly with the AK rear sight block and my Bolt-On Lower Retainer.

Heightwise it's taller than the clamp-on factory front sight blocks, which are designed to line up with the factory rear sight. To use with the factory rear sight, not the adjustable AK sight, you will need to lower the front sight pin to the lowest adjustment.

This pic shows my FSB installed with the AK-74 Style Brake I offer. It's a AK-74 style brake rethreaded for M15x0.75 LH threads.