6.5 Grendel, 20” Stainless Steel Straight Fluted Heavy Barrel, 1:8 Twist, Rifle Length Gas System, 15” MLOK Rail|Upper


This Duce Tactical AR-15 Complete Upper has a 20” barrel with a Heavy profile, made of  416R Stainless Steel, and features a 1:8 Twist Rate, a Rifle length gas system, and .750 Gas Block.

The Upper includes a 15” MLOK Rail, an M4 flat-top forged upper receiver with forward assist, a Bolt Carrier Group, an LS2 Flash Hider, and a Charging Handle. It is chambered in 6.5 Grendel Type II and machined with M4 feed ramps in the barrel extension.

This Duce AR-15 Complete Upper, like all Duce products, is subjected to numerous QA/QC checks which for our firearms and complete upper receiver assemblies includes test firing prior to approval and shipment. 

Choose an upper designed by a US company and made in the USA. Choose Duce Tactical Supply.

6.5 Grendel, 20” Stainless Steel Straight Fluted Heavy Barrel



    Wichita Falls, TX USA

    ©2018 by Duce Tactical Supply.