AR-15 5.56/.223 20" Stainless Steel Tactical Upper Assembly, M-LOK, Triport Muzzle Brake

20" 5.56 Upper: Specs & Features

Enhance your AR-15 build with the 20" Stainless Steel Tactical Upper Assembly designed for precision and durability. This upper features a 416 stainless steel HBAR barrel, hardened to 26-32 RC and stress-relieved for reliable performance. The barrel is chambered in .223 Wylde, allowing you to shoot both 5.56 NATO and .223 Remington rounds. With a 1-8 RH twist, 6-groove button rifling, and M4 feedramps, it offers consistent accuracy shot after shot.

The A3 flat top upper receiver is crafted from certified 7075-T6 aluminum forgings, black hardcoat anodized to meet government specifications. It comes equipped with a forward assist and dust cover for easy operation in various conditions. The low-profile .750 steel gas block is black hardcoat anodized, paired with a rifle-length gas tube for optimal gas flow and performance.

The assembly includes a 15" free-floating M-LOK handguard made from aircraft-quality aluminum, also anodized for long-lasting durability. The barrel features a 1/2-28 muzzle thread and is finished off with a Triport muzzle brake and a crush washer, providing recoil mitigation and a reduced muzzle rise.

Key Features:

• Barrel: 20" 416 stainless steel heavy/HBAR barrel, 1-8 RH twist, 6-groove button rifling.
• Chamber: .223 Wylde (shoots 5.56 NATO and .223 Rem rounds).
• Muzzle: 1/2-28 threads with Triport muzzle brake and crush washer.
• Upper Receiver: A3 flat top, made from 7075-T6 aluminum, black hardcoat anodized with forward assist and dust cover.
• Gas System: .750 low-profile gas block, rifle-length gas tube, black hardcoat anodized.
• Handguard: 15" free-floating M-LOK rail, made from aircraft-quality aluminum, anodized for durability.
• No BCG/Charging Handle: Sold separately.

Please note: Images may not exactly represent the product, as M-LOK variations may occur depending on stock availability, but rest assured the quality is consistent.

FAQ

Will this upper fit my AR-15 lower?

Yes. It fits any standard mil-spec AR-15 lower receiver and uses a standard 5.56 bolt carrier group and STANAG/AR-15 magazines.

What is a .223 Wylde chamber?

A hybrid chamber that safely fires both 5.56 NATO and .223 Remington while giving the tighter accuracy of a .223-style throat.

Is a bolt carrier group included?

No. The bolt carrier group is sold separately; any standard 5.56 AR-15 BCG will work.

What twist rate does it use?

A 1:8 twist, a versatile rate for 55 gr to 77 gr bullets.

Related: 5.56 NATO & .223 Wylde AR-15 uppers