Carbine Distributor Piston System- Along with our piston system and its parts this package Contains our 1 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 Carbine version will work on barrel lengths from 10.5" to 16" that has an existing carbine gas system.
Includes: Piston System1 Piece CarrierM4 Modified HandguardsHandguard Cap
