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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    121 - 180 of 317 items
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    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

    $429.99

    (1)

    $529.99

    $429.00

    (8)

    $279.99

    $219.99

    (1)
     
    5.56 / .223 Wylde 16" m4 Upper with 15" Free Float Quad Rail MSF Sport 16" .223 Wylde 1:8 AR15 Upper w/ BCG & Charging Handle Double Upper Combo!  Complete .223 Wylde & 300 Blk
    5.56 / .223 Wylde 16" m4 Upper with 15" Free Float Quad RailMSF Sport 16" .223 Wylde 1:8 AR15 Upper w/ BCG & Charging HandleDouble Upper Combo! Complete .223 Wylde & 300 Blk

    $279.99

    (14)

    $439.99

    $329.99

    (4)

    $599.99

    $499.99

    (7)
     
    MSF Blem 16" 5.56/223 Wylde AR15 Upper with 10" Free Float 7.5" Stainless 5.56 / .223 Wylde 1:7 416r Barrel Grab Bag / Clearance Ar15 Rifle Upper w/ Free Float Handguard
    MSF Blem 16" 5.56/223 Wylde AR15 Upper with 10" Free Float7.5" Stainless 5.56 / .223 Wylde 1:7 416r BarrelGrab Bag / Clearance Ar15 Rifle Upper w/ Free Float Handguard

    $379.99

    $229.99

    (16)

    $169.99

    $99.00

    $299.99

    $199.99

    (8)
     
    Upgraded Grab Bag / Clearance Ar15 Rifle Upper w/ Free Float Grab Bag / Clearance Ar15 PISTOL Upper w/ Free Float Handguard 7.5" MSF Lightweight Sport 5.56/223 Wylde Ar15 Pistol Upper
    Upgraded Grab Bag / Clearance Ar15 Rifle Upper w/ Free Float Grab Bag / Clearance Ar15 PISTOL Upper w/ Free Float Handguard7.5" MSF Lightweight Sport 5.56/223 Wylde Ar15 Pistol Upper

    $399.99

    $249.00

    (6)

    $299.99

    $199.99

    (5)

    $219.99

    (7)
     
    7.5" Stainless 1:7 5.56/223 ar15 Upper with 7" Free Float Rail Magpul MAG® D-60™ AR/M4 5.56X45MM NATO *Pistol Build Kit* 7.5" Sport 5.56 / .223 Wylde Ar15 w/ 7" Rail
    7.5" Stainless 1:7 5.56/223 ar15 Upper with 7" Free Float RailMagpul MAG® D-60™ AR/M4 5.56X45MM NATO*Pistol Build Kit* 7.5" Sport 5.56 / .223 Wylde Ar15 w/ 7" Rail

    $269.99

    $239.99

    (4)

    $129.95

    $549.00

    $399.99

    (2)
     
    10.5" SS 1:7 5.56/223 ar15 Upper, 10" Gen3 Slim Free Float Rail 10.5" Blem 5.56/223 AR15 Complete Upper w/ BCG & Charging Handle 10.5" SS 1:7 5.56/223 ar15 Upper, 10" Gen2 Slim Free Float Rail
    10.5" SS 1:7 5.56/223 ar15 Upper, 10" Gen3 Slim Free Float Rail10.5" Blem 5.56/223 AR15 Complete Upper w/ BCG & Charging Handle10.5" SS 1:7 5.56/223 ar15 Upper, 10" Gen2 Slim Free Float Rail

    $379.00

    $299.00

    (2)

    $379.00

    $329.99

    (25)

    $379.00

    $289.00

    (2)
     
    10.5" Stainless .223 Wylde 1:8 SSK Upper w/ Nitride BCG & CH 10.5" Stainless 1:7 5.56/223 ar15 Upper with 10" Free Float Rail 10.5" Stainless .223 Wylde 1:8 Upper w/  MI SSK Slim Keymod Rail
    10.5" Stainless .223 Wylde 1:8 SSK Upper w/ Nitride BCG & CH10.5" Stainless 1:7 5.56/223 ar15 Upper with 10" Free Float Rail10.5" Stainless .223 Wylde 1:8 Upper w/ MI SSK Slim Keymod Rail

    $589.99

    $479.97

    $279.99

    (18)

    $489.99

    $379.99

    (1)
     
    10-Pack of PMAG 30 AR/M4 GEN M2 MOE 5.56X45MM NATO Troy Tomahawk PDW Stock - 5.56 Black B.A.D. Vert PDW Stock System
    10-Pack of PMAG 30 AR/M4 GEN M2 MOE 5.56X45MM NATOTroy Tomahawk PDW Stock - 5.56 BlackB.A.D. Vert PDW Stock System

    $129.95

    $99.95

    $355.00

    $299.00

    $450.00

    $419.00

     
    *Pistol Build Kit* 10.5" 5.56 / .223 Wylde Ar15 with 10" FF Rail 18" 1:8 Stainless Fluted 5.56/223 ar15 Upper with 12" Free Float 18" SS .223 Wylde 1:8 Fluted Ar15 Upper, 12" Midwest SSK Rail
    *Pistol Build Kit* 10.5" 5.56 / .223 Wylde Ar15 with 10" FF Rail18" 1:8 Stainless Fluted 5.56/223 ar15 Upper with 12" Free Float18" SS .223 Wylde 1:8 Fluted Ar15 Upper, 12" Midwest SSK Rail

    $529.00

    $429.00

    (1)

    $479.99

    $329.99

    (48)

    $579.99

    $459.99

    (4)
     
    MSF 20" 1:8 Stainless Fluted .223 Wylde Ar15 Upper with 15" Rail 24" SS Fluted Heavy Bull 5.56 .223 Wylde Upper & Gen3 slim rail 7.5" 300 Blackout Ar15 Upper w/ Slim Keymod Free Float
    MSF 20" 1:8 Stainless Fluted .223 Wylde Ar15 Upper with 15" Rail24" SS Fluted Heavy Bull 5.56 .223 Wylde Upper & Gen3 slim rail7.5" 300 Blackout Ar15 Upper w/ Slim Keymod Free Float

    $529.99

    $369.99

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    $529.00

    $399.00

    (5)

    $329.00

    $279.00

    (2)
     
    7.5" 300 Blackout Ar-15 Upper with Free Float Rail 10.5" 300 Blackout Ar15 Upper 16" 300 Blackout Stainless Ar15 Upper w/ F15 Slim Keymod Rail
    7.5" 300 Blackout Ar-15 Upper with Free Float Rail 10.5" 300 Blackout Ar15 Upper16" 300 Blackout Stainless Ar15 Upper w/ F15 Slim Keymod Rail

    $279.00

    $269.00

    (4)

    $329.99

    $279.00

    (8)

    $479.00

    $199.00

    (1)
     
    16" 300 AAC Blackout Ar15 Upper with Free Float Rail *pistol gas *Pistol Build Kit* 10.5" 300 Blackout Ar15 with 10" FF Rail 16" 300 AAC Blackout Ar15 Upper with Free Float Rail
    16" 300 AAC Blackout Ar15 Upper with Free Float Rail *pistol gas*Pistol Build Kit* 10.5" 300 Blackout Ar15 with 10" FF Rail16" 300 AAC Blackout Ar15 Upper with Free Float Rail

    $349.99

    $279.00

    $549.00

    $449.00

    $329.99

    $279.00

    (17)
     
    121 - 180 of 317 items