To be honest i'm not sure what the sights came off. The tape round the mag is just to cover up where i've clipped the clamping catches to make it easier to remove them from their pouch.
The front end is from an HK33k and the stock is from an HK53, the stock is longer and wider than an MP5 stock. I'm afraid I cant stand the G3 sliding stock, it does'nt sit well on the shoulder and just feels like some-one is poking you with a stick.