CMMG Resolut MK57, Semi-automatic Rifle, 5.7X28MM, 16.1" Barrel, Threaded 1/2x28, ZEROED SR Brake, Cerakote Finish, Armor Black, 15" Free Float M-LOK Handguard, ZEROED Polymer Grip, CMMG RipStock, Manual Safety, 20 Rounds, 1 Magazine 57A405E-A Available to order on-line. Ships in 5-14 days $1,731.00