Century Arms AP5-SD 9mm Pistol — 5.75in Threaded Barrel
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About this product
The Century Arms AP5-SD 9mm pistol — 5.75in threaded barrel brings the iconic roller-lock delayed blowback system to a compact, suppressor-ready platform. Built on a stamped steel receiver with a cold hammer-forged barrel, this semi-automatic handgun is ready out of the box for your 3-lug suppressor or direct-thread can. At $1599.99, you get the proven MP5-style action, a removable faux suppressor, and a 1913 Picatinny rail for optics or accessories.
| Manufacturer | Century Arms (per manufacturer specs) |
|---|---|
| Model | AP5-SD |
| Material | Stamped steel receiver, steel barrel |
| Compatibility | 9mm Luger ammunition, 3-lug suppressors, direct-thread suppressors, MP5-style accessories |
| Finish | Black phosphate |
| Weight | 7.2 lbs (with faux suppressor, per manufacturer specs) |
| Condition | New |
Key Features
- Roller-lock delayed blowback action — Why it matters: This proven system reduces felt recoil and keeps your sight picture flat for faster follow-up shots, a major advantage over conventional blowback pistols.
- 5.75-inch cold hammer-forged barrel with 3-lug and threading — Why it matters: The barrel is built to withstand high round counts and suppressors; the 3-lug mount offers quick, secure suppressor attachment while the 1/2x28 threads give you options.
- Removable faux suppressor — Why it matters: Lets you practice with the full SD look and weight, then swap in a real suppressor when you’re ready—no gunsmith needed.
- 1913 Picatinny rail on receiver — Why it matters: Mount a red dot, magnifier, or laser without modifying the gun; keeps your setup modern and adaptable.
- Stamped steel receiver with MP5-style grip assembly — Why it matters: Gives you the classic ergonomics and durability of the original MP5, with a familiar manual of arms for anyone who’s handled the platform.
Who It’s For
This is for the shooter who wants a suppressor host that’s ready from the factory. It’s also for anyone who appreciates the roller-lock system’s reliability and smooth recoil—whether you’re a collector, a range enthusiast, or a new gun owner looking for a unique pistol that stands out. The AP5-SD works well for home defense, range plinking, and as a training companion for MP5-style carbines.
Pros & Cons
- Pro: Threaded barrel and 3-lug mount mean you can run almost any 9mm suppressor without extra adapters.
- Pro: The roller-lock action reduces felt recoil noticeably compared to direct-blowback pistols.
- Pro: 1913 rail makes adding optics simple.
- Con: The faux suppressor is fixed and not intended for removal in the field; if you want a shorter setup, you’ll need to swap the barrel assembly.
Comparison: Century Arms AP5-SD vs. Zev Technologies OZ9 vs. Lone Wolf Distributors G19 Slide & Barrel Kit
| Feature | Century Arms AP5-SD | Zev Technologies OZ9 | Lone Wolf Distributors G19 Kit |
|---|---|---|---|
| Action | Roller-lock delayed blowback | Striker-fired | Striker-fired |
| Barrel length | 5.75 inches | 4.5 inches | 4.02 inches |
| Suppressor-ready | Yes (3-lug + 1/2x28 threads) | Optional threaded barrel | Aftermarket required |
| Rail system | 1913 Picatinny (receiver) | 1913 Picatinny (frame) | None (frame-specific) |
| Weight | 7.2 lbs (with faux suppressor) | 1.6 lbs | ~1.5 lbs (slide + barrel) |
| Price | $1599.99 | $1,299.99 (approx.) | $399.99 (approx.) |
FAQ
What suppressor can I use with the AP5-SD?
You can use any 9mm suppressor that attaches via a 3-lug mount or direct-thread (1/2x28 threads). Popular options include the SilencerCo Omega 9K, Dead Air Wolfman, and Rugged Obsidian 9. Always check your local laws and ensure your suppressor is rated for full-auto use if you plan on rapid fire.
Is the faux suppressor removable?
Yes, but it’s not designed for quick removal. The faux suppressor is attached with set screws and can be taken off if you want to use a direct-thread suppressor or a different muzzle device. However, removing it will expose the 3-lug mount and threads, so you’ll need a thread protector or a suppressor to cover them.
Does this pistol work with standard MP5 magazines?
Yes. The AP5-SD uses standard MP5-style magazines, which are widely available in 10, 15, 20, and 30-round capacities. Stick with quality brands like HK, MKE, or KCI for reliable feeding.
Can I mount a red dot on the AP5-SD?
Yes. The receiver has a 1913 Picatinny rail that accepts most red dot mounts. You can use a direct-mount optic like the Holosun 507C or a low-profile mount for an Aimpoint T2. Just make sure the optic is rated for 9mm recoil.
Trust your purchase:
✔ Nationwide delivery (all 50 states)
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Browse more in our Semi Auto Handguns or check out Suppressors and Accessories to complete your setup.
Last updated: April 2026