The Midwest Industries Nitride Lightweight Upper Receiver Group (part no. MI-N16CRM14-U) is a complete AR-pattern upper assembly chambered in .223 Wylde, built around a 16-inch chrome-moly barrel with a nitride finish for corrosion resistance and long service life. Midwest Industries fits the upper with a mid-length direct impingement gas system, a .625-inch gas block, and M4 feed ramps for reliable feeding across a range of ammunition. The Combat Series M-LOK handguard gives shooters a full-length accessory rail, and an MI A2 flash hider caps the muzzle.

Key Specifications

• Chambered in .223 Wylde, compatible with both .223 Remington and 5.56 NATO.
• Barrel measures 16 inches with a 1:8 twist rate.
• Barrel wears a nitride finish for corrosion resistance.
• Uses a mid-length direct impingement gas system.
• Gas block measures .625 inches in diameter.
• Fitted with M4 feed ramps for reliable feeding.
• Handguard uses the M-LOK Combat Series accessory system.
• Muzzle is capped with an MI A2 flash hider.

Frequently Asked Questions

What cartridges does .223 Wylde chamber? Both .223 Remington and 5.56 NATO.

What gas system does this upper use? A mid-length direct impingement system with a .625-inch gas block.

What handguard does it use? Midwest Industries’ Combat Series M-LOK handguard.

Buy the Midwest Industries Nitride Lightweight 16-inch Upper Receiver Group .223 Wylde M-LOK

Order this Midwest Industries upper from our Midwest Industries lineup of AR15 uppers for fast shipping from our Lubbock, Texas gun shop.