The OPSol Mini-Clip 2.0 Flex has the flexibility to accommodate a wider range of short shell lengths, should Aguila ever want to make an even shorter (or longer) Minishell. Re-loaders were very interested in this accommodation as are buyers of Exotic Products Shorty shells in varying lengths. The 2.0 Flex will feed all but the longest in the Fiocchi line, the #3 Buck shell. Note: Mini Clip 2.0 drops right into the bottom loading port of your shotgun to block the shorter shells from moving too far rearward. No modifications to the gun are necessary.