To eBay: this is a magazine for air rifle only and NOT for firearm. You cannot use this in any firearms.
-same number of rounds as original-(check pictures)
-easy loading-petg plastic for thermal resistance
-improved slug handling with redesigned drum.
-see through cover-super strong magnetic cover locking with positioning tabs (will not interfere with non ferrous rifle material)
-easy spring adjustment.-protrudes above top- 7.61mm (see pictures)
-Perfect for low scope mounts Designed and Made In Canada
Link to video with reliability test.https://youtu.be/JkOvJhdUYwk