JBU M120 Upgrade/Tune Up Kit for M4
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SKU: SDJA41
JB Unicorn M120 Upgrade/Tune Up Kit for M4 AEG
Includes: M120 Spring, Reinforced Piston, Metal Spring Guide with Bearing, Aluminum Air Nozzle, 2 port Cylinder, Aluminum Cylinder Head and Piston Head.
MSRP: $75.00
