AR-15 pistol platform. Calibers offered include .17 HMR, 6.5 Grendel, .300 AAC, and .50 Beowulf. Barrels are 11.5" to 12" depending on caliber; threaded. Manticore Arms 9" Transformer handguard. Standard trigger. SB Tactical SBA3 brace and Ergo Grip. Direct Impingement Operating System except for .17 HMR (blowback system). Various Cerakote finishes. 10-rnd. magazine.