AR:K ST Upgrade kit With Apex2 Ready Barrel Autococker Threaded Barrels MSRP: $329

MSRP: $329

Breakbeam eye and NXT Shocker compatible

indestructible

Features include a retractable "flip-up" support brace and a ridged buttplate that ensures a secure shoulder grip

and most trusted name in cyclone upgrades

AR:K ST Upgrade kit With Apex2 Ready Barrel Autococker Threaded Barrels MSRP: $329This upgrade kit turns your standard AR: K into the newer very limited release ST AR: K. These are very limited and won't be around for long as we are the only store in the U. S. to receive these. The barrel is a . 691 bore size and is Apex2 ready. The shroud has 4 Picatinny rails on it that can mount a variety of items. Don't let this awesome upgrade slip by!