Welcome to Mid State Firearms.

Mid State Firearms specializes in offering top quality Ar15 Upper Receivers, parts, and accessories for sale. We also work to provide you with the best prices on anything you need for home or self defense. Whether you need a fun range toy, or a defense weapon to protect your family, we are here to help.  Be sure to browse all of our items and options to customize your upper for your needs.

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    1 - 60 of 258 items
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    *Rifle Build Kit* SS 16" Slant Keymod Ar15 5.56/.223 w/ 12" Rail *Sale!* Blem Black Nitride m16 BCG & Ext. Latch Charging Handle 14.5" MSF Specter .223 Wylde Ar15 Upper with pin/weld brake
    *Rifle Build Kit* SS 16" Slant Keymod Ar15 5.56/.223 w/ 12" Rail*Sale!* Blem Black Nitride m16 BCG & Ext. Latch Charging Handle14.5" MSF Specter .223 Wylde Ar15 Upper with pin/weld brake

    $599.99

    $479.00

    $189.00

    $74.99

    $529.99

    $329.99

     
    16" MSF Specter .223 Wylde Ar15 Upper with 12" Gen3 Slim Rail Blem 16" 5.56/223 Wylde AR15 Complete Upper with 15" Keymod Rail MSF Blem 16" 5.56/223 Wylde AR15 Upper w/ BCG & Charging Handle
    16" MSF Specter .223 Wylde Ar15 Upper with 12" Gen3 Slim RailBlem 16" 5.56/223 Wylde AR15 Complete Upper with 15" Keymod RailMSF Blem 16" 5.56/223 Wylde AR15 Upper w/ BCG & Charging Handle

    $529.99

    $279.99

    (25)

    $509.99

    $399.99

    $379.99

    $329.99

    (55)
     
    18" 1:8 SS Fluted 5.56/223 MLok Upper, Nickel Boron BCG & CH 6.5 Grendel Stainless Ar15 Upper with free float handguard 16" Stainless .223 Wylde 1:8 Ar15 Upper w/ C15 Slim Keymod Rail
    18" 1:8 SS Fluted 5.56/223 MLok Upper, Nickel Boron BCG & CH6.5 Grendel Stainless Ar15 Upper with free float handguard16" Stainless .223 Wylde 1:8 Ar15 Upper w/ C15 Slim Keymod Rail

    $699.99

    $499.99

    $579.99

    $389.99

    $399.00

    $279.00

    (4)
     
    9mm 3" Ar15 Pistol Upper with 4" Handguard and Flash Can MSF Red Charging Handle - spec ops Oversized Extended Latch MSF Billet Ar15 Stripped Lower and Side charging upper Set *FFL*
    9mm 3" Ar15 Pistol Upper with 4" Handguard and Flash CanMSF Red Charging Handle - spec ops Oversized Extended LatchMSF Billet Ar15 Stripped Lower and Side charging upper Set *FFL*

    $399.00

    $279.00

    $34.99

    $24.99

    $399.00

    $379.00

     
    16" Custom Upper with Free Float Handguard, NiB BCG & Ext. Latch MSF 16" 5.56/223 1:8 Ar15 Upper with slim 12" M-Lok Rail 7.5" Blem 5.56/223 Ar15 Pistol Upper, BCG and Charging Handle
    16" Custom Upper with Free Float Handguard, NiB BCG & Ext. LatchMSF 16" 5.56/223 1:8 Ar15 Upper with slim 12" M-Lok Rail7.5" Blem 5.56/223 Ar15 Pistol Upper, BCG and Charging Handle

    $599.00

    $489.00

    $349.00

    $279.00

    $399.99

    $299.00

     
    MSF 16" 5.56/223 1:8 Ar15 Upper with slim 15" M-Lok Rail Blem MSF 16" 5.56/223 1:8 Ar15 Upper, slim Mlok or Keymod Rail MSF 16" 5.56/223 Wylde 1:8 Ar15 Upper, slim Mlok or Keymod Rail
    MSF 16" 5.56/223 1:8 Ar15 Upper with slim 15" M-Lok RailBlem MSF 16" 5.56/223 1:8 Ar15 Upper, slim Mlok or Keymod RailMSF 16" 5.56/223 Wylde 1:8 Ar15 Upper, slim Mlok or Keymod Rail

    $429.00

    $279.00

    $429.00

    $249.00

    (3)

    $429.00

    $279.00

     
    16" .223 Wylde 1:8 Ar15 Upper with C15 Slim Keymod Rail 15" Slanted Hybrid M-Lok Free Float Rail 16" Stainless .223 Wylde 1:8 Ar15 Upper w/ V15 Slim Keymod Rail
    16" .223 Wylde 1:8 Ar15 Upper with C15 Slim Keymod Rail15" Slanted Hybrid M-Lok Free Float Rail 16" Stainless .223 Wylde 1:8 Ar15 Upper w/ V15 Slim Keymod Rail

    $379.00

    $279.00

    (3)

    $209.00

    $99.00

    $399.00

    $279.00

    (7)
     
    16" .223 Wylde 1:8 Ar15 Upper with F15 Slim Keymod Rail 16" Stainless .223 Wylde 1:8 Ar15 Upper w/ F15 Slim Keymod Rail *Pistol Build Kit* 10.5" 7.62x39 Ar15 with 10" FF Rail
    16" .223 Wylde 1:8 Ar15 Upper with F15 Slim Keymod Rail16" Stainless .223 Wylde 1:8 Ar15 Upper w/ F15 Slim Keymod Rail*Pistol Build Kit* 10.5" 7.62x39 Ar15 with 10" FF Rail

    $379.00

    $279.00

    $399.00

    $279.00

    (5)

    $549.00

    $469.00

     
    16" .223 Wylde 1:8 Ar15 Upper with V15 Slim Keymod Rail 16" SS .223 Wylde 1:8 Ar15 Upper with Slanted Hybrid Keymod Rail Side Charging Ar15 Upper and BCG Combo - 5.56 / 223 / 300 blk
    16" .223 Wylde 1:8 Ar15 Upper with V15 Slim Keymod Rail16" SS .223 Wylde 1:8 Ar15 Upper with Slanted Hybrid Keymod RailSide Charging Ar15 Upper and BCG Combo - 5.56 / 223 / 300 blk

    $379.00

    $279.00

    (9)

    $399.00

    $279.00

    (1)

    $299.00

    $199.00

     
    10.5" SS 5.56/223 Ar15 Upper, Slanted Hybrid Keymod & Flash Can 10.5" 300 BLK Ar15 Upper, Slanted Hybrid Keymod & Flash Can *blem* Mil Spec Ar15 Stripped Upper Receiver - a3/a4 Flat Top
    10.5" SS 5.56/223 Ar15 Upper, Slanted Hybrid Keymod & Flash Can10.5" 300 BLK Ar15 Upper, Slanted Hybrid Keymod & Flash Can*blem* Mil Spec Ar15 Stripped Upper Receiver - a3/a4 Flat Top

    $449.00

    $339.00

    $429.00

    $329.00

    $79.99

    $43.89

     
    9mm Matrix Non-Reciprocating Side Charging Billet Ar15 Upper 15" Slanted Hybrid Keymod Free Float Rail 12" Slanted Hybrid M-Lok Free Float Rail
    9mm Matrix Non-Reciprocating Side Charging Billet Ar15 Upper15" Slanted Hybrid Keymod Free Float Rail 12" Slanted Hybrid M-Lok Free Float Rail

    $299.95

    $199.95

    $199.00

    $99.00

    $179.00

    $99.00

    (1)
     
    12" Slanted Hybrid Keymod Free Float Rail 18" 5.56/223 1:8 SS Spiral Fluted  Ar15 Upper, 12" Hybrid Keymod *Rifle Build Kit* 16" Specter Ar15 5.56/.223 w/ 12" Gen3 Rail
    12" Slanted Hybrid Keymod Free Float Rail 18" 5.56/223 1:8 SS Spiral Fluted Ar15 Upper, 12" Hybrid Keymod*Rifle Build Kit* 16" Specter Ar15 5.56/.223 w/ 12" Gen3 Rail

    $169.00

    $99.00

    $579.99

    $389.99

    $599.99

    $479.00

     
    18" Spiral Fluted 1:8 416r Stainless .223 Wylde Barrel 7.5" 9mm Nitride Ar15 Barrel 7.5" 9mm Stainless Ar15 Barrel
    18" Spiral Fluted 1:8 416r Stainless .223 Wylde Barrel7.5" 9mm Nitride Ar15 Barrel7.5" 9mm Stainless Ar15 Barrel

    $249.99

    $179.99

    $139.00

    $119.00

    $149.00

    $139.00

     
    10.5" 7.62x39 Ar15 Pistol Upper with 12" Gen3 Rail & Flash Can 14.5" 1:8 5.56 / 223 ar15 Pistol Upper with 10" Free Float Rail 14.5" 1:8 5.56 / 223 ar15 Pistol Upper, 15" Keymod & Flash Can
    10.5" 7.62x39 Ar15 Pistol Upper with 12" Gen3 Rail & Flash Can14.5" 1:8 5.56 / 223 ar15 Pistol Upper with 10" Free Float Rail14.5" 1:8 5.56 / 223 ar15 Pistol Upper, 15" Keymod & Flash Can

    $449.00

    $329.00

    $299.99

    $249.99

    $399.99

    $299.00

     
    9mm 5" Ar15 Pistol Upper with C7 Keymod and Flash Can 10.5" 5.56/223 Ar15 Pistol Upper with 12" Gen3 Rail & Flash Can OilSlick Ar15 Bolt Carrier Group m16 BCG
    9mm 5" Ar15 Pistol Upper with C7 Keymod and Flash Can10.5" 5.56/223 Ar15 Pistol Upper with 12" Gen3 Rail & Flash CanOilSlick Ar15 Bolt Carrier Group m16 BCG

    $399.00

    $329.00

    $429.00

    $329.00

    $249.00

    $149.00

     
    Titanium Nitride TiN M16 / Ar15 MPI Bolt Carrier Group 5.56/223 'Ironman' Titanium Nitride BCG & SI Red Charging Handle set Anderson Manufacturing Ar15 Lower Receiver Complete *FFL ITEM*
    Titanium Nitride TiN M16 / Ar15 MPI Bolt Carrier Group 5.56/223'Ironman' Titanium Nitride BCG & SI Red Charging Handle setAnderson Manufacturing Ar15 Lower Receiver Complete *FFL ITEM*

    $229.00

    $159.00

    (2)

    $249.00

    $197.50

    $199.99

    $139.99

    (1)
     
    MSF Billet Ar15 Stripped Lower Receiver *FFL ITEM* AR15 Assembled Upper Receiver - FDE Cerakote - Aero Precision ICD Adjustable Gas Block .750 Low Profile Ar15
    MSF Billet Ar15 Stripped Lower Receiver *FFL ITEM*AR15 Assembled Upper Receiver - FDE Cerakote - Aero PrecisionICD Adjustable Gas Block .750 Low Profile Ar15

    $199.00

    $129.00

    $125.00

    $95.00

    $59.99

    $49.99

    (1)
     
    10.5" 5.56 / 223 Ar15 Pistol Upper with Hybrid Keymod Rail 10.5" 300 BLK Ar15 Pistol Upper with 12" Gen3 Rail & Flash Can 9mm 7.5" Ar15 Pistol Upper with C9 Keymod and Flash Can
    10.5" 5.56 / 223 Ar15 Pistol Upper with Hybrid Keymod Rail10.5" 300 BLK Ar15 Pistol Upper with 12" Gen3 Rail & Flash Can9mm 7.5" Ar15 Pistol Upper with C9 Keymod and Flash Can

    $349.00

    $299.00

    (1)

    $429.00

    $329.00

    (2)

    $399.00

    $329.00

     
    16" MSF 9mm Ar15 Upper with 10" Free Float Rail Rise Armament RA-140 Super Sporting Trigger - 3.5 lb pull SS Blem 16" 5.56/223 Wylde AR15 Upper w/ BCG & Charging Handle
    16" MSF 9mm Ar15 Upper with 10" Free Float RailRise Armament RA-140 Super Sporting Trigger - 3.5 lb pullSS Blem 16" 5.56/223 Wylde AR15 Upper w/ BCG & Charging Handle

    $379.99

    $284.99

    (4)

    $129.00

    $122.00

    (1)

    $409.99

    $349.99

    (44)
     
    3lb Velocity Ar15 Drop in Trigger - 3lb Curved 18"-24" Stainless 308 / Ar10 / Lr308 Barrels .308 3n1 Hybrid Flash Forwarder / Muzzle Brake 5/8-24 30 cal
    3lb Velocity Ar15 Drop in Trigger - 3lb Curved18"-24" Stainless 308 / Ar10 / Lr308 Barrels.308 3n1 Hybrid Flash Forwarder / Muzzle Brake 5/8-24 30 cal

    $149.99

    $134.99

    (3)

    $249.00

    $69.99

    $39.99

    (1)
     
    1 - 60 of 258 items
    1 2 3 ... 5 » View All