6.5 Grendel, 16" Parkerized M4 Barrel, 1:8 Twist, Carbine Length Gas System, 15" MLOK Rail|Upper


The Duce Branded Ursid Hybrid upper assembly has a 16" parkerized, 1:8 twist rate, 15” MLOK rail, and upper receiver. This upper is chambered in 6.5 Grendel Type II and machined with .300 blackout feed ramps (both in the receiver and barrel extension) and a parkarized A2 flash hider. All Duce products are subjected to numerous QA/QC checks which for our firearms and upper receiver assemblies includes test firing prior to approval and shipment. This upper assembly is also backed by our Duce limited lifetime warranty.

Choose an upper assembly designed by a U.S. company made in the U.S.A. Choose right, choose accurately, and choose Duce Tactical Supply.

6.5 Grendel, 16" Parkerized M4 Barrel



    Wichita Falls, TX USA

    ©2018 by Duce Tactical Supply.