Quick overview of the WE Airsoft Hi-Capa 5.1 Version K GBB Pistol available at Destockage Games... "Do you know this version of hi-capa 5.1? Full metal, blowback effect, semi-automatic... the K version of this hi-capa has a picatinny rail and a barrel thread, ideal for accessorizing it:

• 1x Hi-Capa 5.1 Version K Gas GBB WE Pistol - Black
• 1x Gas Magazine 29 BBs"