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Rifle Distributor System- Along with Adam Arms system this package Contains Adam Arms one piece bolt carrier, handguards and handguard cap.
The Adams Arms Gas Piston System is an end user installed after-market product for Mil-Spec ARs. It will fit on any AR barrel with a .750" or 3/4" diameter at the shoulder where the front sight base sits. The Rifle version will work on barrel lengths from 18" to 24" that has an existing rifle gas system.
Product Specifications