Ultimate Upgrade for your AR . 223, RRA is now offering the
Knock Down - Fire Power and the Flexibility of the new .458
SOCOM upper half complete assembly.
your AR15/M16/M4 into a Flexible Knock Down - Fire Power system.
military uses the .458 SOCOM for special operations.
can now take down Big Game, Deer, Bear, Elk, Moose, Dangerous
Game, ect. by converting just the upper receiver.
.458 SOCOM upper works with the standard AR .223 lower receivers
and un-modified 10, 20, 30 round GI magazines.
easy upgrade to your standard AR .223 platform is accomplished
by changing just the upper half.
.458 SOCOM ammunition is widely available in a variety of loads
and bullet types with High Velocity to Sub-Sonic Large Caliber
rounds, 250 - 600 grain.