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Luth-AR 20 in Bull Barrel Complete Upper Barrel Receiver Assembly FTBL-B20M Caliber: .223 Remington, Barrel Length: 20 in, 12% Off w/ Free Shipping

Luth-AR 20 in Bull Barrel Complete Upper Barrel Receiver Assembly, Silver/Black, 20, FTBL-B20M
Luth-AR 20 in Bull Barrel Complete Upper Barrel Receiver Assembly, Silver/Black, 20, FTBL-B20M
Luth-AR 20 in Bull Barrel Complete Upper Barrel Receiver Assembly, Silver/Black, 20, FTBL-B20M
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Luth-AR 20 in Bull Barrel Complete Upper Barrel Receiver Assembly, Silver/Black, 20, FTBL-B20M
Luth-AR 20 in Bull Barrel Complete Upper Barrel Receiver Assembly, Silver/Black, 20, FTBL-B20M
2 of 2 images
Luth-AR 20 in Bull Barrel Complete Upper Barrel Receiver Assembly, Silver/Black, 20, FTBL-B20M

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Questions & Answers
does the hand guard on this upper have the mlok slots on the bottom of the hand guard? Manufacturer Answer

There are 3 M-LOK slots on the bottom of the handguard at the front.

by Luth-AR, Manufacturer, May 21, 2025
View All Q&A You Have a Question? Ask!
Caliber:
.223 Remington
Barrel Length:
20 in
Color:
Silver/Black
Handguard Length:
15 in

Code: 3FN-UFH-LTH54-FTBL-B20M

MPN: FTBL-B20M

UPC: 812058032014

List: $589.99Save 12%
$519.99

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 20 in Bull Barrel Complete Upper Barrel Receiver Assembly

This 20 in bull barrel complete upper receiver assembly is the perfect choice for precision shooting. The fluted bull barrel profile provides adds strength for stability, reducing recoil and increasing accuracy. The barrel is made of high-quality stainless steel, providing durability and longevity. The 1-9 twist rate is suitable for stabilizing heavy projectiles. This is an excellent option for shooters who want a heavy barrel with precision shooting in mind. Starts with our 20 in, .223 caliber fluted bull barrel made from 416 SST with a 1-9 twist mated to our A3 Flattop receiver which includes our bolt carrier, charging handle, forward assist and ejection port cover. The upper is then topped off with our lo-profile gas system and our ergonomic 15 in Palm Handguard with KeyMod or M-LOK slots and a Picatinny top-rail.image

Specifications for Luth-AR 20 in Bull Barrel Complete Upper Barrel Receiver Assembly:

Manufacturer: Luth-AR
Caliber: .223 Remington
Barrel Length: 20 in
Color: Silver/Black
Attachment Type: Picatinny
Handguard Length: 15 in
Gun Rail: M-LOK
Magazine Included: No
Mount Type: Picatinny
Country of Origin: USA

Package Contents:

  • Luth-AR 20 in Bull Barrel Complete Upper Barrel Receiver Assembly

Luth-AR 20 in Bull Barrel Complete Upper Barrel Receiver Assembly Orderable Models

List of Orderable Models

  • Luth-AR 20 in Bull Barrel Complete Upper Barrel Receiver Assembly, Silver/Black, 20, FTBL-B20M , MPN: FTBL-B20M , UPC: 812058032014 , Code: 3FN-UFH-LTH54-FTBL-B20M
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Last updated 2026-07-05 UTC.