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compatible with 20mm tactical railing
Custom GBU Diamond Knurled CNC Suppressor Adaptor 12-14mm Thread
Designed for high conductivity
SLR have brought out a few different types of these flash hiders to suit your custom builds
M4A1 Gen 9 Nylon Replacement Gearbox vector metal compatible with 20mm tactical railingReplacement M4 Gen 9 gearbox with nylon casing. Perfect replacement for a broken gearbox inside of either a Gen 9 M4A1 or the ACR J10. Drop in Gearbox.
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