AIP CNC 7075 Adjustable Blowback Housing for Marui 5.1/4.3/1911 Red 2 different lengths of spring

2 different lengths of spring option lets professional user able to equip the proper one to optimise the performance

Package Includes

11mm positive to 14mm negative

KJW and other compatible Hi-CAPA / 1911 Series Airsoft GBB Pistols

(1) 28 rounds Magazine

AIP CNC 7075 Adjustable Blowback Housing for Marui 5.1/4.3/1911 Red 2 different lengths of springProduction Model : AIP015 M51 4 Multiple cut outs to reduce weight CNC 7075 Aluminum Construction Increase operating speed and improve efficiency Adjustable Blowback part for turning original Blowback to Light Low Blowback Suitable for Marui 5. 1 4. 3 1911 Series Airsoft Gas Blow Black GBB Pistol As always, upgrading GBB require necessary skill & technique, consult expertise if needed Major Color : Black Built Material : 7075 Aluminum