This is the factory Beretta 92FS 9mm 20-round extended magazine. 

This magazine also fits:

• 92SB
• 92F
• 92A1
• M9
• M9A1
• 90-Two
• Billennium
• Vertec
• Brigadier
• Centurion
• Elite
• CX4 with 90 series Magazine Well Insert/Magazine Release
• 92D
• 92G
• 92G-SD
• 92 Combat
• 92 Combat Combo
• 92 Stock
• 92 Steel I
• 92 Vertec (ALL)
• 92SB
• 93R
• 92FS Compact type L
• 92 FS Compact Inox
• 92SB Compact
• 92 Compact Cary Type L

NOTE: If you are purchasing this magazine for a CX4 Carbine, please ENSURE that your pistol has a compatible adapter.