Rock River Arms

Rock River Mid Length A4 Upper Receiver, 5.56mm NATO

SKU# AR0388X
  • Sale
  • Regular price $609.99

One (1) new Rock River Arms Mid Length A4 AR-15 Upper receiver chambered in a 5.56mm NATO. This receiver has a 16 inch chrome moly barrel with a 1:9 inch twist, bolt carrier group, charging handle and a free float quad rail.