The STRIBOG family is now proud to offer two new calibers for big bore enthusiasts - the famous 10 mm AUTO and good old .45 ACP! STRIBOG handguns are very robust and reliable handguns, utilizing advanced roller delayed blowback system which tames even 10mm recoil with ease. The firearm is fed by durable polymer magazine. Both SP45 and SP10 offer high degree of modularity, including picatinny rails on 12 and 6 o clock position, M-LOK(R) slots on 3 and 9 o clock positions which allow for installation of wide range of accessories including red dot sights, hard sights, laser devices and accessory lights (where legal and permitted). Backup flip up sights are installed by default.