yet lightweight compared to metal magazines

Includes a metal 120 round mid-cap and 1000rd bag of BBs

factory replacement/spare magazine

Length: 711mm - 800mm

SOCOM Mk23

AIP 140% Enhanced Recoil/Hammer Spring for Hi-Capa 5.1/4.3 New yet lightweight compared to metalBest use in Conjunction with Metal Slide Outer Barrel + High Flow Blowoff Valve Recoil Spring produces stronger & faster blowback feel Hammer Spring increase the hammer tension resulting higher gas output, i. e. more power fps Suitable for Marui Hi Capa 5. 1 4. 3 Series Airsoft Gas Blow Black GBB Pistol As always, upgrading GBB require necessary skill & technique, consult expertise if needed Major Color : Chrome Built Material : Metal