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GBL M4 Captain America Metal Hop Unit New Version

$ 78.00 USD
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GBL M4 Captain America Metal Hop Unit New Version

DIY ability required !
● Feature :
- No need to remove rail, it can adjust directly.
- There are two ways to adjust HOP.
● Material: Metal made
● Shooting range: above 70M (test with 0.36bb)
● It can be matched with Maple leaf inner barrel. (275/310/370mm)
● Compatible with GBB inner barrel, user needs to modify a little bit by using AEG barrel.
   (The original GHK inner tube is AEG specification)

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