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MADBULL ULTIMATE HOP UP UNIT M4 / AR

by MadBull
Out of Stock
$39.99
SKU MBHOPM4

SKU : MBHOPM4

New hop-up design by Mad Bull for M4/M16 AEG
Features o-rings for enhanced air seal and hop-up dial for easy adjustment.
Chamber seal around the hop-up tube locks in the BB's, and prevents BB's from dropping during mag changes.
Compatible with new Mad Bull LED Tracer 
Recommended for experienced users.