Proprietary spec, only compatible with WBP 5.56 trunnion and carrier

      Virgin bolts which may require fitting to the bullet guide ramp

      Proprietary firing pins with reports of breakages (ourselves included), buy extras if you go this route.

      Bolt Carrier: Polish WBP 5.56 bolt carrier, their 5.45 carriers are identical if out of stock or priced differently

      Rear Sight Block: AK-74 rear sight block

      Bulgarian sight blocks can be found on K-VAR, Gunbroker and AK Files. PSA makes a US copy, however we have no experience using them.

      East German AK-74/Wieger style gas tube levers are unfortunately unobtanium. Repros are on our list to make!

      Hitman 5.56 "AK-101" Barrel

      23mm barrel journal, AK74 profile

      Requires muzzle threaded

      WBP 5.56 AKM Barrel

      23mm barrel journal, AKM profile

      Requires gas block journal to be extended and muzzle threaded

      Rosco 5.56 AKM Barrel

      23mm barrel journal, AKM profile

      Requires gas block journal to be extended and muzzle threaded (AOA provides these services)

      AOA has sold out of these barrels without a gas port drilled. The current gas ports are drilled 90 degrees in the 45 degree location which may not line up with the JMAC gas block.

      AOA has informed us that they will be receiving 5.56 barrels from a new supplier (likely WBP) without gas ports soon, we recommend waiting for these.

      Arsenal Bulgaria 5.56 Barrel

      23mm barrel journal, 14x1mm LH threads

      Rear sight block journal is 18.5mm (milled AK-47 spec) and must be turned down to 17.5mm for AK-74 and WBP rear sight blocks


      5.45x39 Core Parts:

      Option 1: Surplus Parts

      Front Trunnion: Surplus Bulgarian AK-74 (22mm) trunnion & bullet guide

      Bulgarian trunnions can be found on Gunbroker and AK Files for ~$250

      Not recommended for use with a Tantal/Beryl carrier as the impact surfaces are different.

      Bolt: Surplus AK-74 5.45 Bolt (Bulgarian, Russian, East German or Polish Tantal)

      Bulgarian trunnions can be found on Gunbroker and AK Files for ~$250

      Bolt Carrier: Surplus Bulgarian or East German AK-74 thin stem bolt carrier

      Can be found on K-VAR, Gunbroker and AK Files. New old stock East German carriers available here.

      Rear Sight Block: AK-74 rear sight block

      Bulgarian sight blocks can be found on K-VAR, Gunbroker and AK Files. PSA makes a US copy, however we have no experience using them.

      East German AK-74/Wieger style gas tube levers are unfortunately unobtanium. Repros are on our list to make!

      Barrel: AK-Builder AK-74 5.56 22mm Barrel

      Various options available

      Option 2: WBP 5.45 Parts

      Front Trunnion: Polish WBP 5.45 trunnion

      Proprietary spec only compatible with WBP 5.45 bolt and carrier

      23mm barrel journal

      Bolt: Polish WBP 5.45 Bolt

      Proprietary spec, only compatible with WBP 5.56 trunnion and carrier

      Virgin bolts which may require fitting to the bullet guide ramp

      Proprietary firing pins with reports of breakages (ourselves included), buy extras if you go this route.

      Rear Sight Block: AK-74 rear sight block

      Bulgarian sight blocks can be found on K-VAR, Gunbroker and AK Files. PSA makes a US copy, however we have no experience using them.

      East German AK-74/Wieger style gas tube levers are unfortunately unobtanium. Repros are on our list to make!

      WBP 5.45 AK74 Barrel

      23mm barrel journal, AKM profile

      Requires gas block journal to be extended and muzzle threaded

      Rosco 5.45 AKM Barrel

23mm barrel journal, AKM profile

Requires gas block journal to be extended and muzzle threaded (AOA provides these services)

Recommended without gas port

Updated - 9/16/24