Umarex KWA Beretta PMX GBB SMG [by KWA] 
 
Authorized fully licensed and trademark from Beretta
48 Rounds GBB Magazine
Flip-up adjustable iron Front & rear sights
Tri-Lug muzzle device - 12mm CW male threads beneath - 14mm CCW thread adapter
20mm Picatinny Vertical Foregrip
Toolless hop up design
Realistic disassembly - Pop the front pin out and slide the receivers apart, just like the real PMX
Foldable Stock with 3 additional sling points