News|Industry News

By Drew Bryant
May 14th, 2023,

Luth-AR is known for its popular MBA buttstocks and other premium accessories for the AR-15 platform. Luth-AR is proud to introduce it’s newest entry into its complete upper lineup with the .308 Fluted Bull Barrel Complete Upper. This .308 upper was designed for shooters from diverse shooting backgrounds such as competition, tactical, and precision shooting. The Luth upper features a 24” fluted bull barrel, 15” Widebody Handguards with M-Lok slots, and a standard AR-10 BCG.

Below, is the product description and specs for Luth’s new .308 Complete Upper.

Product Description

Introducing our premium quality .308 Complete Upper with a 24″ bull barrel and .308 Widebody Hand Guard™. Built to deliver exceptional performance, this upper is the perfect addition to your AR-10 platform rifle. The 24″ bull barrel mated to our .308 A3 upper receiver ensures high accuracy and superior heat dissipation. The .308 Widebody Hand Guard™  with Picatinny top rail and M-LOK® slots, is designed to give the shooter a stable base when shooting off a rest or natural support. Crafted from the finest materials, this complete upper is easy to install and designed to withstand the toughest conditions. Whether you’re a seasoned shooter or a novice, our .308 complete upper is sure to impress with its exceptional quality and unparalleled performance.


Complete Upper:

• Weight: 8.345 pounds

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


• Due to supply chain issues, material for the bolt may vary.

• Mil-Spec heat treat

• Manganese Phosphate


• 4140 Chrome Moly

• Machined from bar-stock

• Mil-Spec heat treat

• Manganese Phosphate


• 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


• .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


• Height: 2.00″

• Width at widest part: 2.26″

• Inside Height: 1.625″

• Inside Width: 1.35″

The Luth-AR .308 Fluted Bull Barrel Complete upper is currently available on the company’s website. The upper retails for $674.95 MSRP. For more on Luth-AR’s products, click here.

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