Home / AR15 UPPER RECEIVERS / NEW FRONTIER C4 UPPER RECEIVER AR15 STRIPPED BILLET BLACK NEW FRONTIER C4 UPPER RECEIVER AR15 STRIPPED BILLET BLACK Manufacturer : New Frontier Armory UPC : SKU: d41d8cd98f00 Category: AR15 UPPER RECEIVERS Product ID: 145817 Related products Out of stock ATI OMNI HYBRID AR15 STRIPPED POLYMER UPPER RECEIVER GREY $3495 Out of stock ATI OMNI HYBRID AR15 STRIPPED POLYMER UPPER RECEIVER BLACK $3495 ANGSTADT UPPER RECEIVER PISTOL 9MM 6″ M-LOK BLACK $69499 Out of stock 2A BALIOS LITE BILLET UPPER RECEIVER GEN2 AR-15! $25400