The Rock River Arms LAR-15M NM A4 complete upper (brand part no. AR0784) is a match-grade AR-15 upper built for shooters who demand precision without giving up 5.56 compatibility. Rock River Arms chambers it in .223 Wylde, a hybrid chamber that safely runs both .223 Remington and 5.56 NATO while holding match-grade accuracy, and pairs it with a 20-inch air-gauged, cryogenically treated heavy match stainless barrel on a forged A4 upper receiver. The 12.5-inch RRA NM CMP TRO free-float M-LOK handguard carries three included NM TRO modular rails, and the upper ships complete with a bolt carrier group and charging handle installed. Among AR15 uppers, this LAR-15M favors precision rifle and long-range shooters building a dedicated match upper.

Key Specifications

• The chamber is .223 Wylde, safely firing both .223 Remington and 5.56 NATO.
• The upper receiver is a forged A4.
• The barrel length is 20 inches.
• The barrel is air-gauged heavy match stainless steel, cryogenically treated.
• The rate of twist is 1:8 inches.
• The muzzle device is an A2 flash hider on 1/2×28 threads.
• The handguard is a 12.5-inch free-float M-LOK design with three modular NM TRO rail sections.
• It includes a bolt carrier group and charging handle installed.

Frequently Asked Questions

Can I run standard 5.56 NATO ammo through this? Yes, the .223 Wylde chamber is designed to safely and accurately fire both .223 Remington and 5.56 NATO ammunition.

Does this come complete and ready to install? Yes, it includes the bolt carrier group and charging handle, so it drops onto a compatible AR-15 lower and is ready to fire.

What kind of accessories fit the handguard? The 12.5-inch M-LOK handguard accepts M-LOK accessories directly and includes three modular rail sections for lights, lasers, or grips.

Buy the Rock River Arms LAR-15M Complete Upper

A match-grade .223 Wylde upper that drops straight onto your lower is exactly what this LAR-15M delivers. Order it from our Lubbock, Texas gun shop and it ships fast to your door.