LWRC's ICDI Upper Receiver is a perfect start to a custom AR build. It utilizes LWRC's direct impingement operating system with a keyless bolt carrier design and proprietary DI bolt carrier group. The 16.1-inch barrel features button cut rifling and features unique spiral fluting. The barrel is topped with 1/2x28" threads for muzzle devices and suppressors. Other features include an ambidextrous sling mount, an ambidextrous charging handle, an H2 buffer, and a carbine length action spring.

Features of the ICDI Upper Receiver:

• LWRCI DIRECT IMPINGEMENT SYSTEM
• LWRCI COLD HAMMERED BARREL
• LWRCI PROPRIETARY DI BOLT CARRIER GROUP
• LWRCI AMBIDEXTROUS SLING MOUNT
• LWRCI AMBIDEXTROUS CHARGING HANDLE
• H2 BUFFER
• CARBINE LENGTH ACTION SPRING