by Guy J. Sagi posted on January 11, 2012 Guns Support NRA Shooting Illustrated DONATE The Adcor B.E.A.R. is a piston-driven AR with a host of unique features. In this article ADCOR, AR-15, piston Related Stories LWRCI IC-A5 Carbine Video Watch: Caracal USA 814 & 816 Rifles Rifle Roundup: PWS MK114 MOD 2-M Rock River Arms LAR-PDS Gallery CMMG and Faxon Piston AR Review Most Popular So What’s Next? Jim Cirillo’s 1-2-3-6 Drill Be More Than A Bodyguard Which Shotgun Safety Is Best? Grocery Stores Lining up for Ammo Vending Machines Review: Smith & Wesson Model 1854 Rifle