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Luth-AR .223 Complete Upper Receiver Assembly Up to $29.88 Off w/ Free Shipping — 3 models

Luth-AR Complete Upper Receiver Assembly, .223, 26in, 16in, Bull, Carbine, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B16
Luth-AR Complete Upper Receiver Assembly, .223, 27in, 18in, Bull, Rifle, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B18
Luth-AR Complete Upper Receiver Assembly, .223, 31in, 24in, Bull, Rifle, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B24
Luth-AR Complete Upper Receiver Assembly, .223, 26in, 16in, Bull, Carbine, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B16
1 of 3 images
Luth-AR Complete Upper Receiver Assembly, .223, 26in, 16in, Bull, Carbine, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B16
Luth-AR Complete Upper Receiver Assembly, .223, 27in, 18in, Bull, Rifle, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B18
2 of 3 images
Luth-AR Complete Upper Receiver Assembly, .223, 27in, 18in, Bull, Rifle, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B18
Luth-AR Complete Upper Receiver Assembly, .223, 31in, 24in, Bull, Rifle, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B24
3 of 3 images
Luth-AR Complete Upper Receiver Assembly, .223, 31in, 24in, Bull, Rifle, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B24

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Questions & Answers
Can this upper shoot .556 also? Expert Answer

No just .223 caliber.

by Ryan Tarczynski, Gear Expert, September 25, 2021
Just to make sure, is this chambered strictly for .223 or is this a .223 Wylde?

.223 Rem
416 SS
Threaded Barrel - Thread Pitch 1/2 x 28
Gas Block Diameter .936
Gas Tube Length - 16 inch Carbine, 18 inch, 20 inch, and 24 inch are Rifle
1-9 RH Barrel Twist
6 Lands and Groves
M4 Feed Ramp
Button Broached

by Gene, Verified Owner, February 9, 2020
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Great upper by Shawn, April 1, 2022
1/2 inch groups with factory ammo after barrel break in. Fit and finish were good and fit tight to my lower. Upper ran flawless with no issues. Can't wait to see what it can do with good handloads. Over all a great product.
1/1 found this helpful
Most Recent Reviews
Nice product by gene, Verified Owner, October 29, 2023
The Luth-AR .223 Complete Upper Receiver Assembly is well made and an economical way to add a new AR by just unpinning the upper off another AR in your gun case and putting this one on..
Read All 2 Reviews
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ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Luth-AR .223 Complete Upper Receiver Assembly

Luth-AR .223 Caliber fluted bull barrel made from 416 SST with a 1-9 twist mated to Luth-AR A3 Flattop receiver which includes bolt carrier, charging handle, forward assist and ejection port cover. The upper is then topped off with Luth-AR Lo-profile gas system and ergonomic 15in Palm Handguard with KeyMod slots and a Picatinny top-rail.image

Specifications for Luth-AR .223 Complete Upper Receiver Assembly:

Manufacturer: Luth-AR
Caliber: .223 Remington
Barrel Profile: Bull
Barrel Twist Rate: 1-9
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Finish: Anodized
Color: Black, Silver
Gun Model: AR-15
Fabric/Material: 416 Stainless Steel
Gas Block Journal Size-Diameter: .936 in
Handguard Length: 15 in
Handguard Style: Round Rail
Gun Rail: KeyMod
Gun Make: AR Platform
Barrel Material: 416R Stainless Steel
Bolt Carrier Group Included: MIL-SPEC
Charging Handle Included: MIL-SPEC
Magazine Included: No
Condition: New
Country of Origin: USA

Features of Luth-AR AR-15 Fluted Bull Barrel Complete Upper Barrel Assembly

  • .223 Rem
  • 416 SS
  • Threaded Barrel - Thread Pitch 1/2 x 28
  • Gas Block Diameter .936
  • Gas Tube Length - 16 inch Carbine, 18 inch, 20 inch, and 24 inch are Rifle
  • 1-9 RH Barrel Twist
  • 6 Lands and Groves
  • M4 Feed Ramp
  • Button Broached

Package Contents:

  • Luth-AR .223 Complete Upper Receiver Assembly

What firearm models does the manufacturer say Luth-AR .223 Complete Upper Receiver Assembly is compatible with?

The manufacturer says that Luth-AR .223 Complete Upper Receiver Assembly is compatible with AR-15

Luth-AR .223 Complete Upper Receiver Assembly Orderable Models

List of Orderable Models

  • Luth-AR Complete Upper Receiver Assembly, .223, 26in, 16in, Bull, Carbine, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B16 , MPN: FTBL-B16 , UPC: 812058030133 , Code: 3FN-UFH-AR1516FBB-FTBL-B16
  • Luth-AR Complete Upper Receiver Assembly, .223, 27in, 18in, Bull, Rifle, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B18 , MPN: FTBL-B18 , UPC: 812058030140 , Code: 3FN-UFH-AR1516FBB-FTBL-B18
  • Luth-AR Complete Upper Receiver Assembly, .223, 31in, 24in, Bull, Rifle, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B24 , MPN: FTBL-B24 , UPC: 812058030164 , Code: 3FN-UFH-AR1516FBB-FTBL-B24

Luth-AR .223 Complete Upper Receiver Assembly Unavailable & Discontinued Models

List of Unorderable Models

  • Luth-AR Complete Upper Receiver Assembly, .223, 29in, 20in, Bull, Rifle, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, FTBL-B20 , MPN: FTBL-B20 , UPC: 812058030157 , Code: 3FN-UFH-AR1516FBB-FTBL-B20
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Last updated 2026-07-01 UTC.