AIP Adjustable Blowback Housing for Marui 5.1/ 4.3 / 1911

- Multiple cut-outs to reduce weight
- Increase operating speed and improve efficiency
- Adjustable Blowback part for turning original Blowback to Light Low Blowback
- Suitable for TM 5.1/4.3/1911 Gel Blaster Gas Blow Black GBB Pistol

- As always, upgrading GBB require necessary skill & technique, consult expertise if needed

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