We stock two NRA and CMP approved chamber safety flags. The CF10 is the traditional range safety flag issued and used at matches for the 30 caliber service rifles and bolt action match rifles. The #14-475 flag was developed for the AR type rifles to eliminate the problem of the AR bolt “eating” the end of the safety flag. AR bolts can slam closed on the #14-475 with no effect to the bolt or the flag. Curved shape keeps the flag from falling out. The #14-475 flag will work for all rifles and cartridges.
AR-15, Issue:11, Page:080
Big Book Catalog, Issue:70, Page:078
Sinclair, Issue:5B, Page:252