Birchwood Casey 22 Piece AR-15 Cleaning Kit 223 Rem5.56x45mm NATO Rifle 18. 56x45mm NATO Rifle 18 - Birchwood's AR-15 Rifle Cleaning Kit features a custom handle that has locking chuck securing tool while cleaning. The innovative case design displays and protects the tools. Specifications for Birchwood Casey 22 Piece AR-15 Cleaning Kit: Manufacturer: Birchwood Casey Color: Red Projectile Caliber: .223 Caliber Caliber: 5.56x45mm NATO Pieces: 22 Gun Model: AR-15 Package Type: Box Gun Type: Rifle Features of Birchwood Casey BC-ARCLN-KIT AR-15 Cleaning Kit 223 Rem5.56x45mm NATO Rifle 18 18-Piece Comprehensive Cleaning Kit Custom Handle Has Locking Chuck Securing Tool While Cleaning Innovative Case Design Displays And Protects Tools Package Contents: Birchwood Casey BC-ARCLN-KIT AR-15 Cleaning Kit 223 Rem5.56x45mm NATO Rifle 18 Birchwood Casey BC-ARCLN-KIT: 22 Piece AR-15 Cleaning Kit 223 Rem5.56x45mm NATO Rifle 18