The Noveske Dust Cover 300blk is a mil-spec ejection port cover kit designed specifically for AR-15 style rifles chambered in 300 Blackout. Featuring a clean "300 Blk" engraving on the outward-facing side, this cover offers a clear caliber designation while maintaining a low-profile, duty-ready look. Built to match standard upper receivers, it installs easily and integrates seamlessly with your existing hardware.

This dust cover helps keep debris, dirt, and moisture out of your rifle’s action when the firearm is not in use, supporting reliable function at the range or during training. The engraved marking makes it especially useful for shooters running multiple uppers or calibers on the same lower, providing quick visual confirmation of the chambering. Noveske’s attention to detail and reputation for precision machining are reflected in this simple but well-executed upgrade.

Key Features:

• Manufacturer: Noveske
• Model: Dust Cover 300blk
• Caliber: 300 Blackout
• Type: Ejection Port Cover Kit
• Compatibility: Fits standard mil-spec AR-15 upper receivers
• Unique Features: Engraved "300 Blk" on outward-facing side
• What's In The Box: Dust cover, rod, spring, and clip