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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    61 - 120 of 291 items
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    16" Stainless .223 Wylde 1:8 Ar15 Upper w/ F15 Slim Keymod Rail 16" .223 Wylde 1:8 Ar15 Upper with V15 Slim Keymod Rail *Pistol Build Kit* 10.5" 7.62x39 Ar15 with 10" FF Rail
    16" Stainless .223 Wylde 1:8 Ar15 Upper w/ F15 Slim Keymod Rail16" .223 Wylde 1:8 Ar15 Upper with V15 Slim Keymod Rail*Pistol Build Kit* 10.5" 7.62x39 Ar15 with 10" FF Rail

    $399.00

    $279.00

    (5)

    $379.00

    $279.00

    (9)

    $549.00

    $469.00

     
    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 10.5" SS 5.56/223 Ar15 Upper, Slanted Hybrid Keymod & Flash Can
    16" SS .223 Wylde 1:8 Ar15 Upper with Slanted Hybrid Keymod RailSide Charging Ar15 Upper and BCG Combo - 5.56 / 223 / 300 blk10.5" SS 5.56/223 Ar15 Upper, Slanted Hybrid Keymod & Flash Can

    $399.00

    $279.00

    (2)

    $299.00

    $199.00

    $449.00

    $339.00

     
    10.5" 300 BLK Ar15 Upper, Slanted Hybrid Keymod & Flash Can *blem* Mil Spec Ar15 Stripped Upper Receiver - a3/a4 Flat Top 9mm Matrix Non-Reciprocating Side Charging Billet Ar15 Upper
    10.5" 300 BLK Ar15 Upper, Slanted Hybrid Keymod & Flash Can*blem* Mil Spec Ar15 Stripped Upper Receiver - a3/a4 Flat Top9mm Matrix Non-Reciprocating Side Charging Billet Ar15 Upper

    $429.00

    $329.00

    $79.99

    $43.89

    $299.95

    $239.95

     
    15" Slanted Hybrid Keymod Free Float Rail 12" Slanted Hybrid M-Lok Free Float Rail 12" Slanted Hybrid Keymod Free Float Rail
    15" Slanted Hybrid Keymod Free Float Rail 12" Slanted Hybrid M-Lok Free Float Rail 12" Slanted Hybrid Keymod Free Float Rail

    $199.00

    $99.00

    $179.00

    $99.00

    (1)

    $169.00

    $99.00

    (1)
     
    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 18" Spiral Fluted 1:8 416r Stainless .223 Wylde Barrel
    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 Rail18" Spiral Fluted 1:8 416r Stainless .223 Wylde Barrel

    $579.99

    $389.99

    $599.99

    $479.00

    $269.99

    $179.99

     
    7.5" 9mm Nitride Ar15 Barrel 7.5" 9mm Stainless Ar15 Barrel 10.5" 7.62x39 Ar15 Pistol Upper with 12" Gen3 Rail & Flash Can
    7.5" 9mm Nitride Ar15 Barrel7.5" 9mm Stainless Ar15 Barrel10.5" 7.62x39 Ar15 Pistol Upper with 12" Gen3 Rail & Flash Can

    $139.00

    $99.00

    $149.00

    $119.00

    $449.00

    $329.00

     
    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 9mm 5" Ar15 Pistol Upper with C7 Keymod and Flash Can
    14.5" 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 Can9mm 5" Ar15 Pistol Upper with C7 Keymod and Flash Can

    $299.99

    $249.99

    $399.99

    $299.00

    $399.00

    $329.00

     
    10.5" 5.56/223 Ar15 Pistol Upper with 12" Gen3 Rail & Flash Can OilSlick Ar15 Bolt Carrier Group m16 BCG Titanium Nitride TiN M16 / Ar15 MPI Bolt Carrier Group 5.56/223
    10.5" 5.56/223 Ar15 Pistol Upper with 12" Gen3 Rail & Flash CanOilSlick Ar15 Bolt Carrier Group m16 BCGTitanium Nitride TiN M16 / Ar15 MPI Bolt Carrier Group 5.56/223

    $429.00

    $329.00

    $249.00

    $179.00

    $229.00

    $159.00

    (2)
     
    'Ironman' Titanium Nitride BCG & SI Red Charging Handle set Anderson Manufacturing Ar15 Lower Receiver Complete *FFL ITEM* MSF Billet Ar15 Stripped Lower Receiver *FFL ITEM*
    'Ironman' Titanium Nitride BCG & SI Red Charging Handle setAnderson Manufacturing Ar15 Lower Receiver Complete *FFL ITEM*MSF Billet Ar15 Stripped Lower Receiver *FFL ITEM*

    $249.00

    $197.50

    $199.99

    $139.99

    (1)

    $199.00

    $129.00

     
    AR15 Assembled Upper Receiver - FDE Cerakote - Aero Precision ICD Adjustable Gas Block .750 Low Profile Ar15 10.5" 5.56 / 223 Ar15 Pistol Upper with Hybrid Keymod Rail
    AR15 Assembled Upper Receiver - FDE Cerakote - Aero PrecisionICD Adjustable Gas Block .750 Low Profile Ar1510.5" 5.56 / 223 Ar15 Pistol Upper with Hybrid Keymod Rail

    $125.00

    $95.00

    $59.99

    $49.99

    (1)

    $349.00

    $299.00

    (1)
     
    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 16" MSF 9mm Ar15 Upper with 10" Free Float Rail
    10.5" 300 BLK Ar15 Pistol Upper with 12" Gen3 Rail & Flash Can9mm 7.5" Ar15 Pistol Upper with C9 Keymod and Flash Can16" MSF 9mm Ar15 Upper with 10" Free Float Rail

    $429.00

    $329.00

    (2)

    $399.00

    $329.00

    $379.99

    $284.99

    (4)
     
    Rise Armament RA-140 Super Sporting Trigger - 3.5 lb pull SS Blem 16" 5.56/223 Wylde AR15 Upper w/ BCG & Charging Handle 3lb Velocity Ar15 Drop in Trigger - 3lb Curved
    Rise Armament RA-140 Super Sporting Trigger - 3.5 lb pullSS Blem 16" 5.56/223 Wylde AR15 Upper w/ BCG & Charging Handle3lb Velocity Ar15 Drop in Trigger - 3lb Curved

    $129.00

    $122.00

    (1)

    $409.99

    $349.99

    (44)

    $149.99

    $134.99

    (3)
     
    18"-24" Stainless 308 / Ar10 / Lr308 Barrels .308 3n1 Hybrid Flash Forwarder / Muzzle Brake 5/8-24 30 cal 9mm 7.5" Ar15 Complete Pistol Upper, with BCG and Keymod Rail
    18"-24" Stainless 308 / Ar10 / Lr308 Barrels.308 3n1 Hybrid Flash Forwarder / Muzzle Brake 5/8-24 30 cal 9mm 7.5" Ar15 Complete Pistol Upper, with BCG and Keymod Rail

    $249.00

    $69.99

    $39.99

    (1)

    $499.00

    $399.00

    (2)
     
    16" 6.5 Grendel Ar15 Upper Receiver with Free Float Rail 16" 6.8 SPC II Ar15 Upper Receiver with Free Float Rail 5R MSF 20" 1:8 SS Fluted 5.56 / 223 Ar15 Upper with 15" Rail
    16" 6.5 Grendel Ar15 Upper Receiver with Free Float Rail16" 6.8 SPC II Ar15 Upper Receiver with Free Float Rail5R MSF 20" 1:8 SS Fluted 5.56 / 223 Ar15 Upper with 15" Rail

    $499.99

    $319.99

    $499.99

    $329.99

    $529.99

    $369.99

    (2)
     
    9mm Nitride Hybrid Bolt Carrier Group for Glock & Colt AR15 mags 12" Hybrid Keymod Free Float Rail 15" Hybrid Keymod Free Float Rail
    9mm Nitride Hybrid Bolt Carrier Group for Glock & Colt AR15 mags12" Hybrid Keymod Free Float Rail 15" Hybrid Keymod Free Float Rail

    $169.99

    $129.99

    (2)

    $169.00

    $99.00

    (1)

    $179.00

    $109.00

     
    10" Hybrid Keymod Free Float Rail Ar15 Lower Build Kit Includes Mil Spec 6 Position Stock & LPK MSF 16" SS .223 Wylde 1:8 Upper with Gen2 Slim Quad Rail
    10" Hybrid Keymod Free Float Rail Ar15 Lower Build Kit Includes Mil Spec 6 Position Stock & LPKMSF 16" SS .223 Wylde 1:8 Upper with Gen2 Slim Quad Rail

    $169.00

    $99.00

    $149.00

    $89.00

    $329.00

    $279.99

    (6)
     
    16" Stainless M4 5.56 /.223 Wylde Ar15 Upper with Gen3 Slim Rail 16" Stainless .223 Wylde 1:8 Upper w/ MI SSK12 Slim Keymod Rail 16" Stainless .223 Wylde 1:8 SSK12 Upper w/ Nitride BCG & CH
    16" Stainless M4 5.56 /.223 Wylde Ar15 Upper with Gen3 Slim Rail16" Stainless .223 Wylde 1:8 Upper w/ MI SSK12 Slim Keymod Rail16" Stainless .223 Wylde 1:8 SSK12 Upper w/ Nitride BCG & CH

    $349.00

    $319.00

    (8)

    $489.99

    $399.99

    (1)

    $579.99

    $479.97

    (3)
     
    MSF Trucker Hat Ar15 Anti-Rotation / Anti-Walk Trigger & Hammer Pins set MSF Beverage Koozie / Huggie
    MSF Trucker HatAr15 Anti-Rotation / Anti-Walk Trigger & Hammer Pins setMSF Beverage Koozie / Huggie

    $5.99

    $19.99

    $2.99

    $1.49

     
    MSF 16" 5.56/223 Wylde AR15 Upper w/ BCG & Charging Handle 5.56 / .223 Wylde 16" m4 Upper with 12" Free Float Quad Rail *Rifle Build Kit* MSF Sport 16" 1:8 5.56/.223 Wylde Ar15
    MSF 16" 5.56/223 Wylde AR15 Upper w/ BCG & Charging Handle5.56 / .223 Wylde 16" m4 Upper with 12" Free Float Quad Rail*Rifle Build Kit* MSF Sport 16" 1:8 5.56/.223 Wylde Ar15

    $379.99

    (13)

    $279.99

    (4)

    $499.99

    $399.99

    (6)
     
    *Rifle Build Kit* 16" Ar15 5.56/.223 blem w/ 10" Free Float Rail *Rifle Build Kit* 16" Ar15 5.56/.223 w/ 10" Free Float Rail MSF Sport 16" 5.56/.223 Wylde Ar15 Upper
    *Rifle Build Kit* 16" Ar15 5.56/.223 blem w/ 10" Free Float Rail*Rifle Build Kit* 16" Ar15 5.56/.223 w/ 10" Free Float RailMSF Sport 16" 5.56/.223 Wylde Ar15 Upper

    $529.99

    $379.99

    (1)

    $529.99

    $399.99

    (8)

    $279.99

    $219.99

    (1)
     
    61 - 120 of 291 items