Hi Jackie and welcome. This comes with (2) 17rd magazines, 3 Interchangeable wrap around back-straps – S, M, L, and it is optics ready with 4 adapter plates (RMR, Venom, Delta Point and Romeo1)
Stay safe & have a great day!

Hi Jackie, this one comes with (2) 17rd magazines.
4.6” threaded barrel with thread protector
Optimized ergonomic design
Clean and crisp trigger reset with a built in trigger safety
Suppressor height combat sights
Integrated picatinny style accessory rail
Optic ready pistol with 4 adapter plates (RMR, Venom, Delta Point and Romeo1)
Low barrel axis for reduced perceived recoil
3 Interchangeable wrap around back-straps S, M, L
Large trigger guard for use with or without gloves
Enhanced grip texture which enables faster follow-up shots in all conditions
Fully ambidextrous operating controls: slide stop lever, magazine release
.
Stay safe & have a great day!