KE Arms KE-15 Limited Edition 5.56mm NATO Custom SIG 516 Piston-Driven Rifle Featuring our own Chester County Armory Logo


Status: In-Stock / Please Call to Purchase

Show off your CC Armory Pride! This Chester County Armory listing is for our own, company logo’d, custom-built piston-driven AR-15 semi-automatic rifle.

This weapon starts out with a made-just-for-us Keystone Arms KE-15 lower receiver featuring the Chester County Armory logo on the right side of the mag well, and then serial numbered using our company initials!  The lower is made from forged 7075 T6 aluminum with a type 3 hard coat anodizing. It is then finished off with a mil-spec fire control group, A2 pistol grip, and a collapsible carbine stock with a carbine buffer and spring. 

We then married it with a Sig Sauer SIG516 Gen 2 piston-drive AR upper chambered in 5.56mm NATO.  This limited run SIG516 Gen 2 upper has a 14.5″ barrel with a pinned and welded 3-prong flash hider to achieve the minimum barrel length required to comply as a standard-length rifle.  The short stroke pushrod piston upper features an easily user-adjustable gas system covered by Sig’s quad rail, along with a chrome-lined chamber and bore showcasing it’s 1/7 twist rifling. 

This rifle will come with an original Sig Upper manual, as well as one 30rd Magpul Gen2 PMAG with Window. This semi-automatic weapon transfers as a Title One rifle

Add to wishlist

    This Chester County Armory sale listing is for a custom-built KE Arms KE-15 5.56mm semi-automatic rifle featuring a SIG516 Gen 2 piston-driven upper and our own Chester County Armory logo engraved on the lower receiver. This item is a standard, Title One, semi-automatic rifle. We currently have these rifles in-stock, available for purchase. Please call us at 610-235-6155 to purchase or for more information.


    KE Arms, Sig Sauer




    5.56mm NATO


    Short Stroke Piston

    Barrel Length

    14.5" w/ Fixed Flash Suppressor for 16" Overall


    Matte Black