Entirely unusable - ProMag Beretta 21A Bobcat 7 Round Pistol Magazine

Although the magazine itself has no markings on it to indicate who made or where it was made, or what size it is, it came in a bag and said Pro Mag Beretta 21A Bobcat 22LR 7 round blue steel. I say that because my 1st thought was that maybe it is for the 25 ACP caliber it fails to feed into the firearm and if I force it in I literally need a screwdriver and players to get it back out. The tightness appears to be from front to back legntg, not left to right nor length. Not sure if I should send it back to optics planet or send it to pro mag.