Rock River Arms has unleashed the next generation of AR-15 rifles with the X-1 series of rifles.
Available in four calibers: 5.56mm NATO, .308 Winchester, .458 SOCOM, or 6.8mm SPC.
The Rock River X-1 rifles feature the following:
- RRA Operator A2 Stock or RRA Operator CAR Stock
- Hogue Grip
- RRA TRO-XL Extended Length Free Float Rail with Low Profile Gas Block
- 18-Inch Fluted Bead Blasted Stainless Steel Barrel with RRA Beast or Hunter Muzzle Brake
- RRA Two Stage Trigger and Winter Trigger Guard
For more information on these rifles, go to: http://www.rockriverarms.com/index.cfm?fuseaction=category.display&categ... 
All federal and state laws apply.