Echo1 M4 Metal 1pc Hop Up Chamber with Bucking

Features

• Heavy duty aluminum construction
• TM spec 1 piece deisgn
• Complete drop-in replacement unit
• Bucking and nub included
• Factory direct OEM replacement part

Application: For M4 / M16 and Other Compatible Ver.2 Airsoft AEGs
Material: Aluminum Alloy, Polycarbonate, Rubber
Type: One Piece

Manufacturer: Echo1

! Hopup unit may require assembling