Lower Recievers Compatible?
 

Never handled the TM MP5 SD6, got a few A4's kicking around that need lower recievers as the two screw locations that hold the pistol grip plate in place have been stripped. Can the SD6 lower reciever fit the A4 upper reciever? Or is there a difference between the SD6 and SD5 lowers?

Until next time.

As far as i know they are the same. Ive had both apart before and they look identical. havn't tried switching them.