Hop-Up Chamber for GHK M4A1 Maple Leaf

Ref. : MapleLeaf-GHK-M4-001

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CNC aluminium Hop-Up chamber ideal for an upgrade on your GBBR GHK M4A1 Maple Leaf airsoft replica.

You'll have access to a much more precise Hop-up setting. Sold with a Hop-up gasket (GBB barrel open window) and support lug.

Product contents

1 x Hop-Up Chamber for GHK M4A1 Maple Leaf