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Accessory Rail - SIG Rail
from its rial to its barrel
● Kill flash included
Quick adjustable hop up system with tool included
2000+ rounds high capacity
Silent Industries AEG M4 Alpha Hop-Up Chamber (New 2026 Ver.) PK403 Accessory Rail - SIG RailLET US SHOW YOU THE MOST FEATURE PACKED M4 AEG HOP UP EVER MADE! Shipping the new updated version! Whats new? New octagon design for better fitment and unique design CNC POM C clip 540 operational range! Instead of 360 allows for 50% more precise adjustment of the hop up TRUE TDC To get the most consistent pressure on the bucking through the hop up settings, we had to include TDC. This means the nub can only move in up & down motion. The TDC trolley
