922(r) Compliant Parts
The ATF has identified 12 countable parts on the MP5. 6 total US parts are needed for 9mm MP5 builds.
- Receiver
- Barrel
- Trunion
- Bolt
- Bolt Carrier
- Cocking Handle
- Trigger Housing
- Trigger
- Hammer
- Sear
- Buttstock
- Pistol Grip
- Forearm / Handguard
- Magazine Housing
- Magazine Follower
- Magazine Floorplate