1. Firearm Accessories
  3. AR Parts and Accessories
  5. Upper Receivers
  7. Primary Weapons Systems

Primary Weapons Systems Upper Receivers For Sale

Brands

MK116 MOD 2-M 7.62X39MM 16.1 BBL COMPLETE UPPER W/FSC 556

Primary Weapons Systems MK116 MoD 2-M 7.62x39mm 16.1Inch Complete Upper

  • $1,299.95 $1,218.67
In Stock
MK116 MOD 2-M 223 WYLDE 16.1 BBL COMPLETE UPPER W/FSC 556

Primary Weapons Systems MK116 MoD 2-M 223 Wylde 16Inch Complete Upper Receiver with FSC 556

  • $1,299.95 $1,286.01
In Stock
MK116 MOD 1-M 7.62X39MM 16.1 BBL COMPLETE UPPER RECEIVER

Primary Weapons Systems MK116 MoD 1-M 16.1Inch Complete Upper Receiver

  • $1,049.95 $1,012.08
In Stock
MK111 PRO 223 WYLDE 11.85 BBL COMPLETE UPPER RECEIVER BLK

Primary Weapons Systems MK111 Pro Upper 223 Wylde 11.85 Inch BBL Complete Upper Receiver Black

  • $799.99
MK114 MOD 1-M 223 WYLDE 14.5 BBL COMPLETE UPPER THREAD ONLY

Primary Weapons Systems MK114 MOD 1-M 223 Wylde 14.5" BBL Complete Upper Thread Only

  • $1,049.95
MK109 MOD 1-M 300BLK UPPER RECEIVER W/9.75 BBL

Primary Weapons Systems MK109 MOD 1-M 300BLK Upper Receiver 9.75" Barrel

  • $1,049.95
MK114 MOD 2-M 223 WYLDE 14.5 BBL COMPLETE UPPER THREAD ONLY

Primary Weapons Systems MK114 Mod 2-M 223 Wylde 14.50" Anodized Barrel for AR-15

  • $1,299.95
MK114 MOD 2-M 223 WYLDE 14.5 BBL COMPLETE UPPER W/FSC 556

Primary Weapons Systems MK114 MOD 2-M 223 Wylde 14.5" BBL Complete Upper W/FSC 556

  • $1,299.95
Back to top