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Luth-AR A3 Complete Upper Receiver Assembled Up to $25.20 Off w/ Free S&H — 3 models

Luth-AR A3 Complete Upper Receiver Assembled, 11.5in, Government Profile Barrel, 5.56mm, 1-7 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ F Marked FSB and 2-Piece CAR Style Handguard, Black, BA-F11-7
Luth-AR A3 Complete Upper Receiver Assembled, 14.5in, SOCOM Profile Barrel, 1-7 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ F Marked FSB and and 2-Piece CAR Style Handguard, Black, BA-F14-7
Luth-AR A3 Complete Upper Receiver Assembled, 16in, Lightweight Barrel, 5.56mm, 1-7 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ Key MOD Palm Handguard, Black, BA-L16-7
Luth-AR A3 Complete Upper Receiver Assembled, 11.5in, Government Profile Barrel, 5.56mm, 1-7 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ F Marked FSB and 2-Piece CAR Style Handguard, Black, BA-F11-7
1 of 3 images
Luth-AR A3 Complete Upper Receiver Assembled, 11.5in, Government Profile Barrel, 5.56mm, 1-7 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ F Marked FSB and 2-Piece CAR Style Handguard, Black, BA-F11-7
Luth-AR A3 Complete Upper Receiver Assembled, 14.5in, SOCOM Profile Barrel, 1-7 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ F Marked FSB and and 2-Piece CAR Style Handguard, Black, BA-F14-7
2 of 3 images
Luth-AR A3 Complete Upper Receiver Assembled, 14.5in, SOCOM Profile Barrel, 1-7 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ F Marked FSB and and 2-Piece CAR Style Handguard, Black, BA-F14-7
Luth-AR A3 Complete Upper Receiver Assembled, 16in, Lightweight Barrel, 5.56mm, 1-7 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ Key MOD Palm Handguard, Black, BA-L16-7
3 of 3 images
Luth-AR A3 Complete Upper Receiver Assembled, 16in, Lightweight Barrel, 5.56mm, 1-7 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ Key MOD Palm Handguard, Black, BA-L16-7

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Questions & Answers
Does this have the chrome lined barrel? Manufacturer Answer

Those upper barrel assemblies do not have chrome lining at this time. Unless specified as having chrome lining.

by Luth-AR, Manufacturer, January 29, 2026
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Luth AR upper by WestTejas, Verified Owner, April 25, 2024
Bought this upper to have along side my Gordy build. I through a matech rear sight on it and it was dead one. This is a great upper and I love the slim handguard
2/2 found this helpful
Most Recent Reviews
Unbeatable value! by Doug Harris, Verified Owner, September 3, 2025
My package arrived a day early, in discreet packaging, well protected with bubble wrap. The moving parts were pre-lubricated, and fully assembled in perfect condition. All I needed to do was install my rear irons, and it was ready to go! For my money...
Read More...
Read All 2 Reviews
3 Models Available
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Product Info for Luth-AR A3 Complete Upper Receiver Assembled

Starts with our 14.5? M4 SOCOM profile barrel with F Marked Front Sight Base, 5.56mm, made from 4150 CMV steel with a 1-7? twist mated to our A3 Flattop receiver which includes our bolt carrier, charging handle, forward assist and ejection port cover.image

Specifications for Luth-AR A3 Complete Upper Receiver Assembled:

Manufacturer: Luth-AR
Gas System Length: Carbine Length
Barrel Twist Rate: 1-7
Firearms Threads Per Inch: 1/2x28
Muzzle Device: A2 Flash Hider
Finish: Anodized
Color: Black
Gun Model: AR-15
Fabric/Material: Aluminum, Steel
Gas Block Journal Size-Diameter: .750 in
Gun Rail: Picatinny
Gun Make: AR Platform
Barrel Material: 416R Stainless Steel
Weight: 8 oz
Magazine Included: No

Package Contents:

  • Luth-AR A3 Complete Upper Receiver Assembled
  • HG-A2 - 2-Piece CAR style Handguard
  • BL-F14-7 - 14.5in M4 SOCOM Profile Barrel with F marked Front Sight Base
  • FTT-EA1 - A3 Upper Receiver Assembled
  • BC-A-223 - Fully Assembled Bolt Carrier - 5.56mm
  • BL-04A - Carbine Gas Tube
  • BL-750F 750 F Marked Front Sight Base
  • UR-19 - Charging Handle
  • BL-06-A2 - A2 Flash Hider

What firearm models does the manufacturer say Luth-AR A3 Complete Upper Receiver Assembled is compatible with?

The manufacturer suggests that Luth-AR A3 Complete Upper Receiver Assembled is compatible with AR-15

Luth-AR A3 Complete Upper Receiver Assembled Orderable Models

List of Orderable Models

  • Luth-AR A3 Complete Upper Receiver Assembled, 14.5in, SOCOM Profile Barrel, 1-7 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ F Marked FSB and and 2-Piece CAR Style Handguard, Black, BA-F14-7 , MPN: BA-F14-7 , UPC: 812058031796 , Code: 3FN-UFH-TYGH-BA-F14-7
  • Luth-AR A3 Complete Upper Receiver Assembled, 11.5in, Government Profile Barrel, 5.56mm, 1-7 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ F Marked FSB and 2-Piece CAR Style Handguard, Black, BA-F11-7 , MPN: BA-F11-7 , UPC: 812058031772 , Code: 3FN-UFH-TYGH-BA-F11-7
  • Luth-AR A3 Complete Upper Receiver Assembled, 16in, Lightweight Barrel, 5.56mm, 1-7 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ Key MOD Palm Handguard, Black, BA-L16-7 , MPN: BA-L16-7 , UPC: 812058031840 , Code: 3FN-UFH-TYGH-BA-L16-7

Luth-AR A3 Complete Upper Receiver Assembled Unavailable & Discontinued Models

List of Unorderable Models

  • Luth-AR A3 Complete Upper Receiver Assembled, 14.5in, M4 Government Profile Barrel, 5.56mm, 1-9 Twist, 1/2 x 28 Thread, A2 Flash Hider, w/ F Marked FSB and 2-Piece CAR Style Handguard, Black, BA-F14 , MPN: BA-F14 , UPC: 812058031789 , Code: 3FN-UFH-TYGH-BA-F14
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