This is a patent pending 9mm side charging PDW upper kit. This will fire with the stock/brace folded. 

Kit includes the complete side charging upper assembly and super short buffer system that attaches to your lower.

5.5" barrel. Overall length is just 16".

Pictured fully assembled. The kit is $539.99 (Assembled lower not included). We do also have these available as complete Glock mag pistols for $749 without a brace or $949 with folding brace.