This is a pre bent and welded HK MP5 style “builder” receiver. Bent and fusion TIG welded, these come with the shell deflector and sling clip installed with rivets. The major sanding and facing has been done also. These still need final fitting and wledments to your own specifications for your custom build.* The hard work is done for anyone who wants to build an MP5 style firearm, but doesn’t have a bending fixture. These are serialized per ATFs requirements and will require a transfer through your local FFL. These are transferred as a “pistol receiver” to give you the most options when building.
Final fitting and welding is required due to the tremendous amount of aftermarket and non-HK parts available for these builds. We use genuine German HK parts for test fit and “build gages”. We test fit a stock, magazine and bolt group on every receiver. However, there is still final tweaking needed by the end builder to fine tune and fit a final build. Some surface rust will be present. This is normal and this is how we get them and these are bare metal.