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Our rifle uppers use both US Made and imported hand guards but all other parts are guaranteed US Made.

Our pistol uppers use both US Made and imported hand guards, but all other parts are guaranteed US Made.

Most importantly we use only US Made Steel Gas Blocks on any model using a low profile "micro" gas block.

Texas Gun Builders supports our military troops and veterans, as well as law enforcement, with a 10% discount on all products.

Texas Gun Builders' upper assemblies are available in Flat Dark Earth, Burnt Bronze, and many other Cerakote and KG GunKote Colors, and are made from the highest quality materials and with the exception of using imported hand guards on some models... every other part is Made in the USA!

These uppers are not just assembled in Texas, several of the parts are made right here in Texas and Texas Gun Builders runs our own Cerakote and KG GunKote application facility.

So with the high-quality materials, meticulous workmanship & incredible pricing you can't go wrong.

We use Anderson Manufacturing flat top Mil-Spec upper receivers with M$ feed ramps, forged and then CNC Machined from 7075-T6 Aluminum, providing you with the hardest and most durable material of any upper receiver!

The barrels are made from 4150 Gun Quality Parkerized Chrome-Moly Steel, Heat or 416R stainless steel and Treated to RC 28-32 Hardness, and Stress Relieved! The barrels are incredibly accurate and durable.

The gun builders at Texas Gun Builders have over 40 years combined experience, led by an ex-Army Armorer. Our uppers are torqued to military specs & quality checked continuously.

These upper assemblies are available with or without the BCG and Charging Handle and ready to drop it onto your AR-15 Lower... or have us supply the lower.

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AR-10 Upper Assembly - 20in / .308 Win / 1:10 / 15in US Made Handguard / Key-Mod Ultra Lite

.308 Win / 762x51 AR-10 Assembly in Black with a 20 inch Nitride Barrel, 15in Ultralight Hand Guard. This model uses all USA Made parts, and INCLUDES the BCG & Charging Handle.
$619.00 $669.00

AR-10 Upper Assembly - 20in / .308 Win / 1:10 / 15in US Made Handguard / Key-Mod Ultra Lite / NO BCG

.308 Win / 762x51 AR-10 Assembly in Black with a 20 inch Nitride Barrel, 15in Ultralight Hand Guard. This model uses all USA Made parts, but DOES NOT include the BCG & Charging Handle.
$449.00 $499.00

AR-10 Upper Assembly - 20in / 6.5 Creedmoor / 1:8 / 15in US Made Handguard / Key-Mod Ultra Lite

6.5 Creedmoor AR-10 Assembly in Black with a 20 inch Straight Fluted Nitride Barrel, 15in Ultralight Hand Guard. Includes BCG & Charging Handle. This model uses all USA Made parts.
$649.00 $699.00

AR-10 Upper Assembly - 20in / 6.5 Creedmoor / 1:8 / 15in US Made Handguard / Key-Mod Ultra Lite / NO BCG

6.5 Creedmoor AR-10 Assembly in Black with a 20 inch Straight Fluted Nitride Barrel, 15in Ultralight Hand Guard. This model uses all USA Made parts. DOES NOT Include BCG or Charging Handle
$514.00 $599.00

AR-15 Left Hand Upper Assembly - 10.5in / 300 Blackout / 1:7 / 10in US Made Handguard / Ultralite / BCG

300 Blackout Black Barrel AR-15 Left Hand Complete Upper With BCG & Charging Handle All USA Made parts
$517.00 $539.00

AR-15 Upper Assembly - 16in / .223 | 5.56 / 1:8 / 12in TGB M-LOK AR-15 Handguard / Rail with M-LOK Rail Attachment

.223 Wylde Chrome-Moly AR-15 Complete Upper in With BCG & Charging Handle
$357.00
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