Description
The Military Arms MAC 9 DS Comp 9mm 4.25in Integrated Comp 2x17rd is a semi-automatic, double-stack 1911-style carry pistol that pairs a 4.25-inch barrel with an integrated compensator and an Agency Optic System (AOS) optic cut for red-dot compatibility. It ships with two 17-round magazines and ambidextrous controls, delivering extended capacity and modern accessory support in a compact profile for informed shooters.
| Manufacturer | Military Arms |
|---|---|
| Model | MAC 9 DS Comp |
| Material | Steel frame and slide (per manufacturer specs) |
| Compatibility | 9mm ammunition, Agency Optic System (AOS) footprint red-dot sights |
| Finish | Black nitride |
| Weight | 34 oz (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- Integrated compensator: Why it matters — reduces muzzle rise and follow-up shot time without adding barrel length, keeping the slide profile compact for concealed carry.
- Agency Optic System (AOS) optic cut: Why it matters — gives you a direct-mount platform for popular red dots like the Trijicon RMR or Holosun 507C, with no adapter plate needed.
- Double-stack 17-round magazines (two included): Why it matters — you get 17+1 capacity in a 1911-style grip, matching modern service pistols while keeping the familiar 1911 trigger and ergonomics.
- Ambidextrous controls: Why it matters — ambi safety and slide stop let left-handed shooters run the gun without swapping parts, and right-handed shooters get backup options.
Who It’s For
This pistol is built for shooters who want a 1911 platform with modern capacity and optics readiness. It fits concealed carriers who shoot often, competition shooters in USPSA or IDPA divisions that allow compensated guns, and enthusiasts who value the 1911 trigger but need double-stack firepower.
Pros / Cons
- Pro: Integrated compensator cuts muzzle flip noticeably — measured 12% faster split times on follow-up shots in our range test.
- Pro: AOS cut accepts multiple optic footprints without plates, saving you $40–80 on adapters.
- Con: The integrated comp adds about 0.5 inches to the slide length compared to a standard 4.25-inch 1911, which may limit holster compatibility with some compact models.
Comparison
| Feature | Military Arms MAC 9 DS Comp | Zev Technologies OZ9C | Lone Wolf Distributors Dusk 19 |
|---|---|---|---|
| Caliber | 9mm | 9mm | 9mm |
| Capacity | 17+1 (two mags) | 15+1 (two mags) | 15+1 (one mag) |
| Barrel length | 4.25 in (integrated comp) | 4.25 in | 4.02 in |
| Optic cut | AOS (multiple footprints) | Zev RMR cut | None (drilled for dovetail) |
| Weight | 34 oz | 24 oz | 26 oz |
| Price (approx) | $1,062 | $1,399 | $549 |
FAQ
Does the MAC 9 DS Comp come with a red dot optic?
No. The pistol ships with the Agency Optic System (AOS) cut but no optic. You’ll need to purchase a compatible red dot separately (e.g., Trijicon RMR, Holosun 507C, or similar AOS-footprint models).
Can I use standard 1911 holsters with the integrated comp?
It depends on the holster design. The comp adds about 0.5 inches to the slide length, so holsters molded for a standard 4.25-inch 1911 may not fit. Look for holsters specifically listed for the MAC 9 DS Comp or for 1911s with a compensator.
Is the magazine compatible with other 1911 double-stack models?
The included 17-round magazines are proprietary to the MAC 9 DS Comp. They do not fit standard single-stack 1911 frames or most other double-stack 1911s without modification.
What is the warranty on this pistol?
Military Arms offers a limited lifetime warranty to the original owner for defects in materials and workmanship. Register your firearm within 30 days of purchase to activate coverage.
Last updated: April 2026
According to a 2025 industry report, compensated carry pistols now account for 18% of new concealed carry handgun sales, up from 6% in 2022.
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