AIP Aluminum High-Speed Blowback Housing for Marui 5.1/4.3/1911

AIP Aluminum High-Speed Blowback Housing for Marui 5.1/4.3/1911 Suitable for Marui 5.1 / 4.3 / 1911 GBB Pistol New Blow Black System for Marui 5.1/4.3/1911Series Multiple cut-outs to reduce weight Increase operating speed and improve efficiency