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Luth-AR 5.56mm Lightweight Complete Upper Barrel Receiver Assembly BAA3-L16 Caliber: 5.56x45mm NATO, Overall Length: 26 in, $26.40 Off w/ Free Shipping

Luth-AR Lightweight Complete Upper Barrel Receiver Assembly, 5.56mm, 26in, 16in, Light Weight, Carbine, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Black, BAA3-L16
Luth-AR Lightweight Complete Upper Barrel Receiver Assembly, 5.56mm, 26in, 16in, Light Weight, Carbine, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Black, BAA3-L16
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Luth-AR Lightweight Complete Upper Barrel Receiver Assembly, 5.56mm, 26in, 16in, Light Weight, Carbine, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Black, BAA3-L16

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Questions & Answers
Can this barrel shoot 556 and 223 ? Expert Answer

Yes, this barrel can handle both cartridges.

by Kurt Colbourne, Gear Expert, September 18, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
You get what you see. by Big Jake, Verified Owner, September 24, 2021
Very nice. Trim. Sturdy. Compact. Does what it says. Accurate. Truck gun, my friend. Direct impingement setup right out of the box. If it had ONE drawback, it's only that the BARREL NUT will NOT accommodate a gas-piston upgrade. That's the only dr...
Read More...
1/1 found this helpful
Most Recent Reviews
Luth-AR Very Impressed by GJ, Verified Owner, June 12, 2020
I bought this Luth-AR complete upper and was very impressed with the quality, feel, and look of this receiver. Just holding it you can tell how much care went into machining and assembling this solid product. If only they offered this as a piston opt...
Read More...
Read All 2 Reviews
Caliber:
5.56x45mm NATO
Overall Length:
26 in
Barrel Length:
16 in
Barrel Profile:
Light Weight
Gas System Length:
Carbine Length
Barrel Twist Rate:
1-9
Handguard Type:
Free-Float
Muzzle Device:
A2 Flash Hider
Finish:
Manganese Phosphate
Color:
Black
Gun Model:
AR-15
Gas Block Journal Size-Diameter:
.750 in
Handguard Length:
15 in
Weight:
8 lb
Condition:
New

Code: 3FN-UFH-AR15LCUBA11-BAA3-L16

MPN: BAA3-L16

UPC: 812058030171

List: $439.95Save $26.40
$413.55

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 5.56mm Lightweight Complete Upper Barrel Receiver Assembly

Starts with Luth-AR 5.56mm Lightweight barrel made from 4150 Chrome Molly 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 5.56mm Lightweight Complete Upper Barrel Receiver Assembly:

Manufacturer: Luth-AR
Caliber: 5.56x45mm NATO
Overall Length: 26 in
Barrel Length: 16 in
Barrel Profile: Light Weight
Gas System Length: Carbine Length
Barrel Twist Rate: 1-9
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Finish: Manganese Phosphate
Color: Black
Gun Model: AR-15
Fabric/Material: 4150 Chrome Molly Vanadium, 4140 Chrome Moly
Gas Block Journal Size-Diameter: .750 in
Handguard Length: 15 in
Handguard Style: Round Rail
Gun Rail: KeyMod
Gun Make: AR Platform
Weight: 8 lb
Bolt Carrier Group Included: MIL-SPEC
Charging Handle Included: MIL-SPEC
Magazine Included: No
Condition: New
Threads per Inch: 1/2x28
Country of Origin: USA

Features of Luth-AR AR-15 11.5in Lightweight Complete Upper Barrel Assembly

  • Available in 11.5 inch
  • 5.56 mm
  • 4150 Chrome Moly
  • Threaded Barrel - Thread Pitch 1/2 x 28
  • Gas Block Diameter .750
  • Gas Tube Length - Carbine
  • 1-9 RH Barrel Twist
  • 6 Lands and Groves
  • M4 Feed Ramp
  • Button Broached

Package Contents:

  • Luth-AR 5.56mm Lightweight Complete Upper Barrel Receiver Assembly

What firearm models does the manufacturer say Luth-AR 5.56mm Lightweight Complete Upper Barrel Receiver Assembly is compatible with?

The manufacturer says that Luth-AR 5.56mm Lightweight Complete Upper Barrel Receiver Assembly is compatible with AR-15

Luth-AR 5.56mm Lightweight Complete Upper Barrel Receiver Assembly Orderable Models

List of Orderable Models

  • Luth-AR Lightweight Complete Upper Barrel Receiver Assembly, 5.56mm, 26in, 16in, Light Weight, Carbine, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Black, BAA3-L16 , MPN: BAA3-L16 , UPC: 812058030171 , Code: 3FN-UFH-AR15LCUBA11-BAA3-L16

Luth-AR 5.56mm Lightweight Complete Upper Barrel Receiver Assembly Unavailable & Discontinued Models

List of Unorderable Models

  • Luth-AR Lightweight Complete Upper Barrel Receiver Assembly, 5.56mm, 20in, 11.5in, HBAR, Carbine, 1x9, 1/2x28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Black, BAA3-L11 , MPN: BAA3-L11 , UPC: 812058030447 , Code: 3FN-UFH-AR15LCUBA11-BAA3-L11
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Last updated 2026-07-05 UTC.