This is the fullsize MP5. 4pos/3rd burst ambi lower, paddle mag, correctly remarked, and with full stock, very comfortable to shoot! This rifle is a registered as a Machine Gun.
This is the rarest of the MP5 conversion. It was originally done by Billistics inc, and it's a true conversion. It is the 3 pin version. You can use all standard replacement parts on this gun. There is no need to time any sears or hammers. One of the most sought after conversions.