18" 350 Legend Upper - SHAW Match Stainless HBAR - 15" MLOK Rail

18" 350 Legend Upper for AR-15 with Shaw Match Grade Stainless HBAR Barrel and 15" M-LOK Rail

The 350 Legend was engineered to deliver outstanding hunting performance from the AR-15 platform while producing mild recoil and excellent terminal energy. Designed specifically as a straight-wall cartridge, the 350 Legend has become a top choice for deer hunting in states that require straight-wall ammunition. This 18" 350 Legend upper features a Shaw Match Grade 416R stainless steel HBAR barrel, carbine-length gas system, A2 flash hider, and lightweight 15" free-float M-LOK handguard for exceptional accuracy, dependable reliability, and outstanding field performance. Whether you're building a 350 Legend AR-15, upgrading an existing rifle, or looking for a precision 350 Legend upper receiver, this configuration delivers excellent performance for hunting, target shooting, and recreational use.

Quick Glance:

Caliber: 350 Legend
Platform: AR-15
Barrel Length: 18 inches
Barrel Manufacturer: Shaw Barrels
Barrel Grade: Match Grade
Barrel Material: 416R Stainless Steel
Barrel Profile: HBAR
Barrel Finish: Stainless
Twist Rate: 1:16 Twist
Gas System: Carbine Length
Handguard Length: 15 inches
Handguard Type: Lightweight Extended Rifle Length Free-Float M-LOK
Upper Receiver: Forged 7075-T6 Mil-Spec AR-15 Upper
Gas Block: .750" Low Profile
Muzzle Threads: 1/2x28
Muzzle Device: A2 Flash Hider
Headspace Checked: Yes – Manson GO and NO-GO Gauges
Assembly: Fully Assembled Upper Receiver Assembly

Full Details:

Upper Receiver:
AR-15 Mil-Spec forged aluminum upper receiver with forward assist and dust cover assembly installed. Forged from durable 7075-T6 aluminum and protected with a matte black MIL-A-8625 Type III, Class 2 hard coat anodized finish. The stronger 7075-T6 construction provides greater strength and durability than commonly used 6061 billet aluminum receivers.

Barrel:
Shaw Match Grade 18" 350 Legend barrel manufactured from premium 416R stainless steel with an HBAR profile, polished stainless finish, 1:16 twist rate, and 1/2x28 muzzle threads. Features a standard AR-15 Big Bore barrel extension with a single feed ramp and is professionally headspaced using Manson GO and NO-GO gauges. The 18-inch barrel provides outstanding velocity and accuracy while delivering excellent terminal performance with popular 150 to 170 grain 350 Legend hunting ammunition.

Handguard:
Premium lightweight 15" extended rifle-length AR-15 free-float M-LOK handguard. M-LOK attachment slots at the 3, 6, and 9 o'clock positions provide generous room for mounting optics, bipods, lights, slings, grips, and other M-LOK compatible accessories. Precision machined from 6061 aircraft-grade aluminum and finished with a matte black MIL-A-8625 Type III, Class 2 hard coat anodized coating.

Gas System:
Carbine-length gas system paired with a .750" low-profile gas block for dependable cycling and reliable function across a broad range of factory 350 Legend ammunition.

Muzzle Device:
A2 flash hider installed on 1/2x28 muzzle threads to reduce visible muzzle flash while protecting the barrel threads.

About Shaw Barrels:
Shaw Custom Barrels, also known as E.R. Shaw, has manufactured precision rifle barrels since 1913. Shaw Match Grade barrels are trusted by hunters, competitive shooters, gunsmiths, and custom rifle builders for their consistent accuracy, quality craftsmanship, and dependable long-term performance.

Headspace Checked:
Every barrel is professionally headspaced using Manson GO and NO-GO gauges to verify proper chamber dimensions and dependable operation.

Ready to Install:
This upper receiver arrives fully assembled and is compatible with all standard Mil-Spec dimension AR-15 lower receivers.

Important:
This product is not a firearm and ships directly to your door. No FFL transfer is required.

Ballistic Barn AR-15 uppers are proudly American made and assembled using quality Mil-Spec components. Every barrel is individually headspaced with Manson GO and NO-GO gauges to help ensure dependable reliability, excellent accuracy, and long service life.