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 328 items
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    *Rifle Build Kit* CHF 14.7 Pin/Weld Ar15 5.56 1:7 w/ 12" Rail 18" 1:8 SS Fluted 5.56/223 MLok Upper, Nickel Boron BCG & CH 16" Oilslick Ar15 upper with 15" lt Mlok, BCG & Charging handle
    *Rifle Build Kit* CHF 14.7 Pin/Weld Ar15 5.56 1:7 w/ 12" Rail 18" 1:8 SS Fluted 5.56/223 MLok Upper, Nickel Boron BCG & CH16" Oilslick Ar15 upper with 15" lt Mlok, BCG & Charging handle

    $599.99

    $399.99

    $699.99

    $499.99

    (4)

    $569.00

     
    Custom Color / Caliber PVD m16 Ar Bolt Carrier Group BCG 20" 1:8 5r SS Fluted 5.56 MLok Upper, Nickel Boron BCG & CH TiN Titanium Nitride Gold 18" Fluted .223 Wylde Ar15 Barrel
    Custom Color / Caliber PVD m16 Ar Bolt Carrier Group BCG20" 1:8 5r SS Fluted 5.56 MLok Upper, Nickel Boron BCG & CHTiN Titanium Nitride Gold 18" Fluted .223 Wylde Ar15 Barrel

    $249.00

    $149.00

    $799.99

    $499.99

    $249.00

     
    14.7" CHF PIN/WELD Upper with Slim Keymod or Mlok FF Rail Trex Machine 3.5 lb Drop In Trigger assembly for Ar15 A2 Rifle Stock / Buffer tube kit for Ar15 / M16
    14.7" CHF PIN/WELD Upper with Slim Keymod or Mlok FF RailTrex Machine 3.5 lb Drop In Trigger assembly for Ar15 A2 Rifle Stock / Buffer tube kit for Ar15 / M16

    $437.97

    $327.97

    $149.00

    $89.00

    $49.99

     
    Surge Ar15 6 position stock / buffer tube kit *Pistol Build Kit* 7.5" Shockwave 300 Blackout Ar15 w/ 7" Rail 15" Lightweight Slim M-Lok Handguard
    Surge Ar15 6 position stock / buffer tube kit*Pistol Build Kit* 7.5" Shockwave 300 Blackout Ar15 w/ 7" Rail15" Lightweight Slim M-Lok Handguard

    $49.99

    $549.00

    $399.99

    $129.00

    $99.00

     
    *PREMIUM Rifle Build Kit* 3lb Trigger with Slim Rail & NiBo BCG 3lb Velocity Ar15 Drop in Trigger - 3lb Curved *Pistol Build Kit* 7.5" Shockwave 5.56 / 223 Ar15 w/ 7" Rail
    *PREMIUM Rifle Build Kit* 3lb Trigger with Slim Rail & NiBo BCG3lb Velocity Ar15 Drop in Trigger - 3lb Curved*Pistol Build Kit* 7.5" Shockwave 5.56 / 223 Ar15 w/ 7" Rail

    $699.99

    $549.99

    $149.99

    $134.99

    (3)

    $549.00

    $399.99

     
    10.5 300 Blackout Rainbow PVD Oilslick 416r 1:8 Ar15 Barrel Velocity 3lb Enhanced AR-15 Lower Parts Kit LPK w/ AntiWalk Pins 11.5" 5.56 Nato 1:8 Ar15 Upper Receiver with 10" free float
    10.5 300 Blackout Rainbow PVD Oilslick 416r 1:8 Ar15 BarrelVelocity 3lb Enhanced AR-15 Lower Parts Kit LPK w/ AntiWalk Pins11.5" 5.56 Nato 1:8 Ar15 Upper Receiver with 10" free float

    $299.00

    $249.00

    $209.99

    $149.99

    $379.00

    $279.00

     
    16 Fluted Rainbow PVD Oilslick .223 Wylde 416r Ar15 Barrel 16" 223 Wylde Melonite 1:7 Ar15 upper with 12" Light MLok Rail 3lb Velocity Ar15 Drop in Trigger - 3lb Straight w/ finger stop
    16 Fluted Rainbow PVD Oilslick .223 Wylde 416r Ar15 Barrel16" 223 Wylde Melonite 1:7 Ar15 upper with 12" Light MLok Rail3lb Velocity Ar15 Drop in Trigger - 3lb Straight w/ finger stop

    $299.00

    $249.00

    $390.00

    $249.00

    $159.99

    $144.99

     
    18" SS 223 Wylde 1:8 Rifle length Ar15 Upper w 15 MLok Rail 6.5 Creedmoor 18" 416r Stainless Fluted Barrel Lr 308 ar 6.5 Creedmoor 18" SS Fluted blem Upper, Aero receiver, 15" mlok
    18" SS 223 Wylde 1:8 Rifle length Ar15 Upper w 15 MLok Rail6.5 Creedmoor 18" 416r Stainless Fluted Barrel Lr 308 ar6.5 Creedmoor 18" SS Fluted blem Upper, Aero receiver, 15" mlok

    $389.00

    $299.00

    $349.00

    $149.00

    $579.00

    $379.00

     
    6.5 Creedmoor 24" SS Fluted blem Upper, Aero receiver, 17" mlok Ar15 Cobra Adjustable 6pos Mil Spec stock kit - Black Ar15 Shockwave Lower Build parts kit - Blade, Pistol Tube , LPK
    6.5 Creedmoor 24" SS Fluted blem Upper, Aero receiver, 17" mlok Ar15 Cobra Adjustable 6pos Mil Spec stock kit - BlackAr15 Shockwave Lower Build parts kit - Blade, Pistol Tube , LPK

    $679.00

    $489.00

    $49.99

    $149.00

    $129.00

     
    AR15 XL Assembled Upper Receiver - 458 / 450 / 50 big bore Combo sale! blem Assembled Ar15 Upper, Nickel BCG, & Handle Maxim Defense Industries, CQB Pistol/PDW Brace for AR15
    AR15 XL Assembled Upper Receiver - 458 / 450 / 50 big boreCombo sale! blem Assembled Ar15 Upper, Nickel BCG, & HandleMaxim Defense Industries, CQB Pistol/PDW Brace for AR15

    $109.99

    $79.98

    $249.00

    $149.00

    $395.00

     
    Oilslick 224 Valkyrie 22" 1:7 416r Spiral Ar15 Barrel Shockwave Blade Pistol Stabilizer With Buffer Kit, Black or FDE 20" 1:8 5r SS Fluted 223 Wylde MLok Upper, Nickel Boron BCG & CH
    Oilslick 224 Valkyrie 22" 1:7 416r Spiral Ar15 Barrel Shockwave Blade Pistol Stabilizer With Buffer Kit, Black or FDE20" 1:8 5r SS Fluted 223 Wylde MLok Upper, Nickel Boron BCG & CH

    $479.00

    $299.00

    $128.95

    $78.95

    $799.99

    $499.99

     
    *Rifle Build Kit* 16" Ar15 5.56/.223 1:7 blem w/ 10" Free Float *Rifle BuildKit* 16" Slant Keymod Ar15 5.56 Nato SS Mid 1:8 blem *sale* Ar15 Lower Build Kit - Mil Spec 6 Position Stock & LPK
    *Rifle Build Kit* 16" Ar15 5.56/.223 1:7 blem w/ 10" Free Float*Rifle BuildKit* 16" Slant Keymod Ar15 5.56 Nato SS Mid 1:8 blem*sale* Ar15 Lower Build Kit - Mil Spec 6 Position Stock & LPK

    $529.99

    $299.99

    $599.99

    $399.99

    $149.00

    $89.00

     
    *sale* Ar15 Standard Mil Spec Lower Parts Kit LPK 14.7" Cold Hammer Forged CHF 5.56 Nato 1:7 MidLength Ar15 Barrel 16" 1:7 5.56/223 Wylde blem AR15 Upper w/ BCG & Charging Handle
    *sale* Ar15 Standard Mil Spec Lower Parts Kit LPK14.7" Cold Hammer Forged CHF 5.56 Nato 1:7 MidLength Ar15 Barrel16" 1:7 5.56/223 Wylde blem AR15 Upper w/ BCG & Charging Handle

    $59.99

    $44.99

    $299.00

    $159.00

    (3)

    $379.99

    $329.99

     
    16" Blem 1:7 5.56/223 Wylde AR15 Upper with 10" Free Float 16" MSF Specter .223 Wylde Ar15 Upper with 12" Gen3 Slim Rail 20" CHF 5.56 Nato 1:7 Melonite Ar15 Rifle Upper, c15 Rail
    16" Blem 1:7 5.56/223 Wylde AR15 Upper with 10" Free Float 16" MSF Specter .223 Wylde Ar15 Upper with 12" Gen3 Slim Rail20" CHF 5.56 Nato 1:7 Melonite Ar15 Rifle Upper, c15 Rail

    $379.99

    $229.99

    $529.99

    $279.99

    (25)

    $499.00

    $349.00

     
    224 Valkyrie - 18" Stainless 416r 1:7 Ar15 Barrel 224 Valkyrie 22" 1:7 416r .224 SS Spiral Flute Ar15 Barrel 224 Valkyrie Ar15 18" SS Upper with F15 Keymod Rail
    224 Valkyrie - 18" Stainless 416r 1:7 Ar15 Barrel224 Valkyrie 22" 1:7 416r .224 SS Spiral Flute Ar15 Barrel 224 Valkyrie Ar15 18" SS Upper with F15 Keymod Rail

    $249.00

    $209.00

    $279.00

    $209.00

    $449.00

    $349.00

     
    6" Ar9 SS 9mm Ar15 Upper with Flash Can & Slant Keymod Aero Precision M5 .308 Assembled Upper Receiver - Anodized Black Ar15 Oilslick Stormbreaker Tactical Unicorn Builder Set - *FFL*
    6" Ar9 SS 9mm Ar15 Upper with Flash Can & Slant KeymodAero Precision M5 .308 Assembled Upper Receiver - Anodized BlackAr15 Oilslick Stormbreaker Tactical Unicorn Builder Set - *FFL*

    $349.00

    $249.00

    $155.00

    $131.75

    $649.00

    $599.00

     
    Blem 20" CHF 5.56 Nato 1:7 Melonite Ar15 Upper, with BCG & CH ToolCraft Melonite / Black Nitride M16 Bolt Carrier Group 16" Stainless .223 Wylde 1:8 Ar15 Upper w/ C15 Slim Keymod Rail
    Blem 20" CHF 5.56 Nato 1:7 Melonite Ar15 Upper, with BCG & CHToolCraft Melonite / Black Nitride M16 Bolt Carrier Group16" Stainless .223 Wylde 1:8 Ar15 Upper w/ C15 Slim Keymod Rail

    $499.00

    $399.00

    $189.00

    $79.00

    $399.00

    $279.00

    (4)
     
    20" 416r Stainless Fluted 5.56/223 Wylde 1:8 5r MLok Upper Custom Assembled Oilslick Ar15 Upper - You pick options OilSlick Ar15 Bolt Carrier Group m16 BCG *Choose Your Caliber!*
    20" 416r Stainless Fluted 5.56/223 Wylde 1:8 5r MLok UpperCustom Assembled Oilslick Ar15 Upper - You pick optionsOilSlick Ar15 Bolt Carrier Group m16 BCG *Choose Your Caliber!*

    $799.99

    $349.99

    $599.00

    $499.00

    $249.00

    $179.00

     
    10.5" 4150 9mm ar15 upper, c13 keymod, flash can, bcg, ambi ch 16" SS .223 Wylde 1:8 AR15 Upper with c12 M-Lok Rail *Rifle Build Kit* 16" SS Ar15 5.56/.223 1:8 mid w/ c12 Mlok Rail
    10.5" 4150 9mm ar15 upper, c13 keymod, flash can, bcg, ambi ch 16" SS .223 Wylde 1:8 AR15 Upper with c12 M-Lok Rail*Rifle Build Kit* 16" SS Ar15 5.56/.223 1:8 mid w/ c12 Mlok Rail

    $499.00

    $399.00

    $379.99

    $279.99

    $599.99

    $399.00

     
    *Rifle Build Kit* 18"  Ar15 5.56/.223 Wylde 1:8 mid w/ c12 Mlok *Rifle Build Kit* blem 16" 4150 Ar15 1:7 223 Wylde, 10" mlok *Rifle Build Kit* blem 16" SS Ar15 5.56 1:8 mid, 12" mlok Rail
    *Rifle Build Kit* 18" Ar15 5.56/.223 Wylde 1:8 mid w/ c12 Mlok *Rifle Build Kit* blem 16" 4150 Ar15 1:7 223 Wylde, 10" mlok *Rifle Build Kit* blem 16" SS Ar15 5.56 1:8 mid, 12" mlok Rail

    $599.99

    $399.00

    $599.99

    $399.00

    $599.99

    $399.00

     
    1 - 60 of 328 items
    1 2 3 ... 6 » View All