• Welcome to the NEW Fostech.com website! • SHOP SALE & CLEARANCE FosTecH Foxhole

Making the world safer one firearm at a time.®
  • Videos
  • Photos
  • Documents
  • Dealers
    • Dealer Locator
    • Become a Dealer
    • Dealer Login
  • NFA/Military/First Responder
    • N.F.A.
    • Military & L.E.
    • First Responder Program
  • Wholesale
  • About
  • Contact
  • Call
FosTecH, Inc.

CALL US

(812) 445-4028
WELCOME

Sign In / Register
00
See All
  • Home
  • Rifles/SBR/Braced Pistols
    • Shop by Series
      • Stealth
      • Flite
      • Tech
    • Shop by Caliber
      • 5.56
      • 9mm
      • .300 Blackout
      • .22 Long Rifle
      • .22 ARC
      • 6MM ARC
      • .223 Wylde
      • .458 SOCOM
    • Shop by Type/Purpose
      • Long Range Rifles
      • 16″ Barrel Rifles
      • Short Barrel Rifles
      • Braced Pistols
    • Build Your AR
    • AR-15 Parts & Accessories
  • Origin Shotguns
    • Origin Shotguns
    • Origin-12 Accessories
  • Handguns
  • Echo Triggers
    • Echo Triggers
    • Echo Replacement Parts
      • Echo AR II Trigger
      • Echo Sport Trigger
      • Echo AK Trigger
  • Accessories
    • Drums
    • Origin-12 Accessories
    • Drone Handguns
      • Predator Sig 320 Parts
    • AR-15 Parts & Accessories
      • Triggers
      • Quad Rails/Handguards
      • Stocks, Grips, Braces, & Folding Adapters
      • Upper & Lower Receivers/Builder Kits
      • Upper & Lower Parts
      • Complete Upper Receivers
      • Complete Lower Receivers
      • Caliber Conversion Kits
      • AR Lightweight Components
      • All AR-15 Parts & Accessories
    • AK Parts & Accessories
    • Sights & Optics
    • M Lock/Picatinny Mounts, Rails & Slings
    • Gun Cases, Racks, Vehicle Mounts, etc.
  • Packages & Sets
  • Ammo
  • Merch
  • FoxholeSALE
  • Home
  • Rifles/SBR/Braced Pistols
    • Shop by Series
      • Stealth
      • Flite
      • Tech
    • Shop by Caliber
      • 5.56
      • 9mm
      • .300 Blackout
      • .22 Long Rifle
      • .22 ARC
      • 6MM ARC
      • .223 Wylde
      • .458 SOCOM
    • Shop by Type/Purpose
      • Long Range Rifles
      • 16″ Barrel Rifles
      • Short Barrel Rifles
      • Braced Pistols
    • Build Your AR
    • AR-15 Parts & Accessories
  • Origin Shotguns
    • Origin Shotguns
    • Origin-12 Accessories
  • Handguns
  • Echo Triggers
    • Echo Triggers
    • Echo Replacement Parts
      • Echo AR II Trigger
      • Echo Sport Trigger
      • Echo AK Trigger
  • Accessories
    • Drums
    • Origin-12 Accessories
    • Drone Handguns
      • Predator Sig 320 Parts
    • AR-15 Parts & Accessories
      • Triggers
      • Quad Rails/Handguards
      • Stocks, Grips, Braces, & Folding Adapters
      • Upper & Lower Receivers/Builder Kits
      • Upper & Lower Parts
      • Complete Upper Receivers
      • Complete Lower Receivers
      • Caliber Conversion Kits
      • AR Lightweight Components
      • All AR-15 Parts & Accessories
    • AK Parts & Accessories
    • Sights & Optics
    • M Lock/Picatinny Mounts, Rails & Slings
    • Gun Cases, Racks, Vehicle Mounts, etc.
  • Packages & Sets
  • Ammo
  • Merch
  • FoxholeSALE

Upper & Lower Receivers/Builder Kits

  • Home
  • Shop
  • FosTecH Firearms Accessories
  • AR-15 Accessories
  • Upper & Lower Receivers/Builder Kits
  • Flite Stripped Upper Receiver
    AR Lightweight Components, AR-15 Accessories, FosTecH Firearms Accessories, Upper & Lower Receivers/Builder Kits

    Flite Stripped Upper Receiver

     $249.99
    Add to cart
    Add to wishlist
    Quick View
  • Flite Upper and Lower Receiver Set
    AR Lightweight Components, AR-15 Accessories, FosTecH Firearms Accessories, Upper & Lower Receivers/Builder Kits

    Flite Upper and Lower Receiver Set

     $482.99
    Add to cart
    Add to wishlist
    Quick View

  • Flite Stripped Lower Receiver
    AR Lightweight Components, AR-15 Accessories, FosTecH Firearms Accessories, Upper & Lower Receivers/Builder Kits

    Flite Stripped Lower Receiver

     $259.99
    Add to cart
    Add to wishlist
    Quick View
  • Out of stock
    Tech Stripped Lower Receiver
    AR-15 Accessories, Upper & Lower Receivers/Builder Kits

    Tech Stripped Lower Receiver

     Starting at: $79.99
    Select options This product has multiple variants. The options may be chosen on the product page
    Add to wishlist
    Quick View
  • Out of stock
    Stealth Raptor Builders Kit w/ Mach 2 Handguard
    MORE COLORS & HANDGUARD LENGTHS
    AR Lightweight Components, AR-15 Accessories, FosTecH Firearms Accessories, Packages & Matching Sets, Upper & Lower Receivers/Builder Kits

    Stealth Raptor Builders Kit w/ Mach 2 Handguard

     Starting at: $659.99
    Select options This product has multiple variants. The options may be chosen on the product page
    Add to wishlist
    Quick View

  • Out of stock
    Stealth Raptor Builders Kit w/ Mach 1 Handguard
    MORE COLORS & HANDGUARD LENGTHS
    AR Lightweight Components, AR-15 Accessories, FosTecH Firearms Accessories, Packages & Matching Sets, Upper & Lower Receivers/Builder Kits

    Stealth Raptor Builders Kit w/ Mach 1 Handguard

     Starting at: $689.99
    Select options This product has multiple variants. The options may be chosen on the product page
    Add to wishlist
    Quick View

  • Tech Complete Lower Receiver
    MORE TRIGGERS, STOCKS / BRACES. & LOGOS
    AR-15 Accessories, Complete Lower Receivers, Upper & Lower Receivers/Builder Kits

    Tech Complete Lower Receiver

     Starting at: $329.99
    Select options This product has multiple variants. The options may be chosen on the product page
    Add to wishlist
    Quick View

  • Tech Upper Receiver 1Tech Upper Receiver 2
    AR-15 Accessories, FosTecH Firearms Accessories, Upper & Lower Receivers/Builder Kits

    Tech Stripped Upper Receiver

     $79.99
    Add to cart
    Add to wishlist
    Quick View
  • Fostech 15 Mach 4 handguard Tungsten builder kitFostech 10 Mach 4 handguard OD green Builder Kit
    MORE COLORS & HANDGUARD LENGTHS
    AR Lightweight Components, AR-15 Accessories, FosTecH Firearms Accessories, Packages & Matching Sets, Upper & Lower Receivers/Builder Kits

    Stealth Raptor Builders Kit w/ Mach 4 Handguard

     Starting at: $659.99
    Select options This product has multiple variants. The options may be chosen on the product page
    Add to wishlist
    Quick View

  • Flite Complete Lower Receiver TomahawkFlite Complete Lower SBA3
    MORE TRIGGERS & STOCKS / BRACES
    AR Lightweight Components, AR-15 Accessories, Complete Lower Receivers, Upper & Lower Receivers/Builder Kits

    Flite Complete Lower Receiver

     Starting at: $499.99
    Select options This product has multiple variants. The options may be chosen on the product page
    Add to wishlist
    Quick View

  • Tech Receiver Combo 1.2Tech Receiver Combo 2
    AR-15 Accessories, FosTecH Firearms Accessories, Upper & Lower Receivers/Builder Kits

    Tech Upper and Lower Receiver Set

     Starting at: $149.99
    Select options This product has multiple variants. The options may be chosen on the product page
    Add to wishlist
    Quick View

fostech_inc
Freedom didn’t end on the 4th. Check in while it Freedom didn’t end on the 4th. Check in while it’s still hot. You know where to look.
Built for freedom. Engineered to last. This Indep Built for freedom. Engineered to last. This Independance Day, we’re proud to celebrate American craftsmanship and the freedom that fuels it. Happy 4th of July from all of us at FosTecH🇺🇸
Some of our employees shooting... what’s more Am Some of our employees shooting... what’s more American?
Smoking hot... Smoking hot...
Everyday carry, upgraded. Everyday carry, upgraded.
The dual wielding raptors.. The dual wielding raptors..
Great weekend spent shooting & Camping with some o Great weekend spent shooting & Camping with some of our employees. Always grateful for our Fostech Family.
Get the rapid-fire excitement of the Fostech platf Get the rapid-fire excitement of the Fostech platform — with the affordability and ease of .22 caliber shooting. Train longer, shoot more, and spend less.
Follow on Instagram

Making the world safer, one firearm at a time.®

Subscribe to the FosTecH newsletter for our latest offers!

Contact Us

SUBSCRIBE on YOUTUBE!
Facebook Instagram X-twitter Youtube

CALL

(812) 445-4028

EMAIL

sales@FosTecH.us

VISIT

320 Myers Street
Seymour, IN 47274

OPEN

Monday-Friday
8:00am-4:00pm Eastern

Shop FosTecH

  • Shop All Products
  • Origin Shotguns
  • Handguns
  • Build Your AR

Help & Support

  • Documents, Manuals, & Patents
  • Customer Service & Warranties
  • Video Resources
  • Dealer Locator

Information

  • Become a Dealer
  • N.F.A.
  • Military & L.E.
  • First Responder Program
  • Wholesale Partners
  • Terms & Conditions
  • Photo Galleries
  • About Us
  • Contact FosTecH

Featured Product

  • POPULAR
    Echo AR II Trigger
    AR15 Triggers, Echo Triggers

    Echo AR II Trigger

     $479.99
    Add to cart
    Add to wishlist
    Quick View

FosTecH, Inc. © 2025. All Rights Reserved
Website developed by P.TEN Marketing
has been added to your cart.
Checkout
  • FosTecH Products
  • Other Information
  • Home
  • Rifles/SBR/Braced Pistols
    • Shop by Series
      • Stealth
      • Flite
      • Tech
    • Shop by Caliber
      • 5.56
      • 9mm
      • .300 Blackout
      • .22 Long Rifle
      • .22 ARC
      • 6MM ARC
      • .223 Wylde
      • .458 SOCOM
    • Shop by Type/Purpose
      • Long Range Rifles
      • 16″ Barrel Rifles
      • Short Barrel Rifles
      • Braced Pistols
    • Build Your AR
    • AR-15 Parts & Accessories
  • Origin Shotguns
    • Origin Shotguns
    • Origin-12 Accessories
  • Handguns
  • Echo Triggers
    • Echo Triggers
    • Echo Replacement Parts
      • Echo AR II Trigger
      • Echo Sport Trigger
      • Echo AK Trigger
  • Accessories
    • Drums
    • Origin-12 Accessories
    • Drone Handguns
      • Predator Sig 320 Parts
    • AR-15 Parts & Accessories
      • Triggers
      • Quad Rails/Handguards
      • Stocks, Grips, Braces, & Folding Adapters
      • Upper & Lower Receivers/Builder Kits
      • Upper & Lower Parts
      • Complete Upper Receivers
      • Complete Lower Receivers
      • Caliber Conversion Kits
      • AR Lightweight Components
      • All AR-15 Parts & Accessories
    • AK Parts & Accessories
    • Sights & Optics
    • M Lock/Picatinny Mounts, Rails & Slings
    • Gun Cases, Racks, Vehicle Mounts, etc.
  • Packages & Sets
  • Ammo
  • Merch
  • FoxholeSALE
  • Videos
  • Photos
  • Documents
  • Dealers
    • Dealer Locator
    • Become a Dealer
    • Dealer Login
  • NFA/Military/First Responder
    • N.F.A.
    • Military & L.E.
    • First Responder Program
  • Wholesale
  • About
  • Contact
Join the FosTecH Waitlist We will inform you when the product arrives in stock. Please leave your valid email address below.