The Century Arms AP5 SD

Published on June 1, 2026
Duration: 9:14

This review of the Century Arms AP5 SD provides a detailed look at its technical specifications and features. The presenter highlights the firearm's 5.75-inch barrel, overall length, and weight, emphasizing the 1/2x28 threaded barrel for suppressor compatibility. Key features discussed include the faux suppressor shroud, three-lug adapter, MP5-style grip, and a robust, non-moving shrouded handguard. The review also covers the ambidextrous safety selector, the classic MP5 'HK slap' operation, fixed front and adjustable rear sights, and the roller-delayed blowback system. It notes the inclusion of two standard capacity magazines and options for sling mounting. The presenter also details the two-position brace and the trigger's characteristics, including take-up, wall, and reset.

Quick Summary

The Century Arms AP5 SD is a 9mm firearm featuring a 5.75-inch barrel and a faux suppressor shroud for aesthetic appeal. It utilizes a roller-delayed blowback system, offers dual magazine release options (paddle and button), and includes a Picatinny rail for modern optic mounting, blending classic MP5 design with contemporary functionality.

Chapters

  1. 00:00Introduction to the AP5 SD
  2. 00:39Technical Specifications (Barrel, Length, Weight)
  3. 00:51Threaded Barrel and Faux Suppressor
  4. 01:10Three Lug Adapter and Grip
  5. 01:15Shrouded Handguard Design
  6. 01:46Ambidextrous Safety Selector
  7. 02:02MP5 HK Slap Operation
  8. 02:23Chambered in 9mm
  9. 02:28Iron Sights (Front & Rear)
  10. 02:36Receiver and Lower Portion
  11. 02:59Handguard Material and Grip
  12. 03:36Sling Mounts (Front & Rear)
  13. 03:50Magazine Release Options
  14. 04:05Non-Reciprocating Charging Handle
  15. 04:12Roller Delayed Blowback System
  16. 04:26Picatinny Rail for Optics
  17. 04:55Safety Selector Markings vs. Functionality
  18. 05:35Two-Position Brace Deployment
  19. 05:51Trigger Feel and Reset
  20. 06:53Magazine Compatibility (Magpul)
  21. 07:15Overall Impression and Value
  22. 07:43Conclusion and Community Engagement

Frequently Asked Questions

What are the key specifications of the Century Arms AP5 SD?

The Century Arms AP5 SD features a 5.75-inch barrel, an overall length of 24.7 inches (collapsed brace) to 30 inches (deployed brace), and weighs approximately 6.6 pounds. It is chambered in 9mm and utilizes a roller-delayed blowback system.

Does the Century Arms AP5 SD come with a functional suppressor?

No, the AP5 SD features a faux suppressor shroud that provides the visual aesthetic of an integrated suppressor. For actual sound suppression, users must purchase and attach a compatible 9mm suppressor to the 1/2x28 threaded barrel.

What are the magazine release options on the Century Arms AP5 SD?

The Century Arms AP5 SD offers two methods for magazine release: the traditional MP5-style paddle lever, similar to an AK-style release, and a push-button located on the receiver for quicker access.

Can modern optics be mounted on the Century Arms AP5 SD?

Yes, the AP5 SD comes with a Picatinny rail mount that can be attached to the top receiver. This allows for the mounting of various Picatinny-compatible optics, bringing the classic MP5 SD design into modern usage.

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