DIY: Luth-AR 308 Upper: Complete Upper & 24-inch Fluted Barrel

Luth-AR continues developing a stable of products and aftermarket components for shooters looking to DIY build their AR-15. The new complete Luth-AR 308 Upper adds yet another quality component upgrade to the mix.

Luth-AR 308 Upper Details

The complete upper comes with a 24-inch fluted bull barrel chambered in .308. It’s “built to deliver exceptional performance and reliability,” according to Luth-AR. As such, it features high-quality 4150 Chome Moly and comes with a 1:10 twist and threaded barrel with flash hider.

The upper assembly also includes a 15-inch Widebody Hand Guard. This component adds M-LOK attachment points for adding on accessories. A Pictainny top rail on the receiver delivers space to mount a primary optic. The A3-style upper receiver comes with a bolt carrier, bolt and charging handle. So this one truly comprises a fully drop-in unit. Just bolt it on and go to work.

With the .308 chambering, this component works for multiple types of builds, including hunting, competition, self-defense or even duty. The Luth-AR 308 Upper retails for $674.95. For even more info, please visit luth-ar.com.

Luth-AR 308 Upper Features & Specs

Upper Receiver:

A3 Upper receiver
Charging handle
Ejection port door installed
Hard Coat Anodized Black
6061-T6 Aluminum Extrusion
.275 Takedown pin holes
1913 Picatinny Rail is .151″ low profile
DPMS (Gen1) A3 low receiver height

Bolt Carrier Specs:

Carrier: 8620 steel
Cam pin: 4340 Alloy steel
Carrier key: 4130 Alloy steel
Army Spec Heat Treatment
Manganese Phosphate

Bolt:

Due to supply chain issues, material for the bolt may vary.
Mil-Spec heat treat
Manganese Phosphate

Extractor:

4140 Chrome Moly
Machined from bar-stock
Mil-Spec heat treat
Manganese Phosphate

Barrel:

Caliber: .308
Twist: 1-10
Type: Fluted Bull Barrel, Threaded
Length: 24″
Material: Chrome Moly Vanadium (4150 steel)
Finish: Manganese Phosphate

Flash Hider:

Thread Pitch: 5/8 – 24
4140 Chrome Moly
Finish: Manganese Phosphate

Handguard:

.308 Widebody Hand Guard
M-LOK
15” Length available
Includes Widebody Hand Guard Barrel Nut
Includes 4 clamp screws
2 vertical set screws, to control linear movement
Thread lock for simple and quick installation
Material: 6061-T6 Aluminum extrusion
Finish: Black hardcoat anodized, matte finish
Dimensions
- Height: 2.00″
- Width at widest part: 2.26″
- Inside Height: 1.625″
- Inside Width: 1.35″