Century Arms AP5-P 9mm Semi-Auto Pistol with 30 Round Magazine for sale. The AP5 or “Apparatus Pistol”, is a roller delayed blowback firearm based and built off of the original and historic design from the 1970’s. The roller-lock platform has been widely respected as the preeminent design for over 50 years. Adopted for use across the globe, no other firearm of its type has been more successful. These firearms which are imported from the MKE manufacturing facility in Turkey are available in a full sized model designated simply as the AP5, a midsized version as the AP5-P, and a fully concealable version as the AP5-M.