Product Description The Lyman MSR Precision Die System is the only die set engineered specifically for Modern Sporting Rifle (MSR) ammunition, making it an essential tool for any serious reloader. Designed to meet the unique demands of semi-automatic MSR platforms chambered in .223 Remington / 5.56 NATO, this complete 3-die set delivers the precision, reliability, and consistency every reloader needs. The Small Base Sizing Die resizes cases to a slightly smaller diameter than standard dies, ensuring positive and smooth chambering in semi-automatic actions. A dedicated Seating Die and a separate Taper Crimp Die work together to provide a tight bullet grip critical for reliable feeding. The included Ammo Checker cartridge "Go" gauge, machined to minimum chamber specs, lets you confirm each loaded round is ready to chamber before your next range session. All dies feature a sleek black oxide finish and are neatly organized in a foam-lined, sturdy clear-cover storage case. Made in the USA. Product Highlights Engineered exclusively for Modern Sporting Rifles (MSR) chambered in .223 Remington / 5.56 NATO for optimal semi-auto performance Small Base Sizing Die reduces case diameter slightly below standard specs to guarantee smooth, positive chambering in semi-automatic actions Separate Taper Crimp Die provides added bullet grip essential for reliable feeding and function through semi-auto actions Ammo Checker cartridge "Go" gauge machined to minimum chamber specs allows you to verify every round before heading to the range Black oxide finish on all dies; complete set stored in a sturdy, foam-lined, clear-cover storage case for easy organization and transport Specs Brand: Lyman MPN: 7690100 UPC: 011516701008 Caliber: .223 Remington / 5.56 NATO Die Set: 3-Die Set Die Types Included: Small Base Sizing Die, Seating Die, Taper Crimp Die Accessories Included: Ammo Checker Cartridge "Go" Gauge, Clear-Cover Foam-Lined Storage Case Gun Type: Rifle (Modern Sporting Rifle / Semi-Automatic) Finish: Black Oxide Country of Manufacture: USA Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.