BEAR ARMS in EL DORADO SPRINGS has the RUGER AR 556 Pistols in different calibers. This one is in 300 Blackout caliber. REDACTED   
Description:  RUG AR-556 PST 300BLK 30RD B
Brand:  Ruger
Model:  AR-556 Pistol
Type:  Pistol: Semi-Auto
Caliber:  300 AAC Blackout
Finish:  Matte Black Oxide
Action:  Semi-Automatic
Sight:  No Sights
Barrel Length:  10.5 1-7 RH
 Overall Length:  25 - 27.60
Weight:  5.8 lbs
Capacity:  30+1
# of Mags:  1 - 30 RD
Safety:  Manual Safety
Receiver:  Adj. SB Tactical SBA3 Stabilizing Brace
Features:  Threaded 5/8x24, Magpul M-LOK Acessory Slots;
Type III Hard Coat Anodized