300 BLK blackout 223/5.56 Case & Ammunition Gauge

This is a sizing gauge to allow the quick checking of .223 and 300 Blk brass length for need of trimming. The lengths are for max case length for both brass case types (45mm for 223 and 34.75mm for 300blk). Placing brass in the correct slot should give you an idea if the brass case needs to be trimmed shorter, or can be used as is for reloading. 300 Blackout BLK and 223 5.56 Case & Ammunition Gauge Check Your Reloads & Ammo.   Condition is New. These are 100% Made In The USA!  If you would like something custom made please feel free to send us a message and we will get it done for you!  Made of Durable High Strength Plastic.  !!! Support Small Business !!!