Military Arms MAC 5K 9mm 5.8″ 30rd Black
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About this product
The Military Arms MAC 5K is a compact, roller-delayed blowback pistol chambered in 9mm, designed for shooters seeking an MP5-style experience without the NFA paperwork. It ships in a pistol configuration with a 5.8-inch barrel, feeding from 30-round magazines. This platform leverages a proven German roller-delay system repackaged for the modern commercial market, prioritizing range use and aftermarket compatibility over military ruggedness.
What is the Military Arms MAC 5K used for?
The MAC 5K is used primarily for recreational range shooting and as a customizable host for suppressors. Its pistol configuration avoids the tax stamp and wait time associated with a Short-Barreled Rifle (SBR), making it an accessible entry point into the MP5 platform. The included tri-lug muzzle is purpose-built for quick-attach suppressors, and the HK-pattern compatibility allows owners to swap stocks, handguards, and triggers with widely available parts.
How does the Military Arms MAC 5K compare to the Century Arms AP5-P?
The MAC 5K directly competes with the Century Arms AP5-P, where the AP5-P generally offers better initial fit and finish but the MAC 5K has superior out-of-the-box value. The AP5-P, a Turkish-made licensed clone, typically commands a $300-$400 premium and includes only one magazine, while the MAC 5K ships with two 30-rounders, a sling, and a case for under $1300. For a shooter prioritizing budget and immediate accessory inclusion, the MAC 5K is the better value; for one seeking the closest possible clone to a German original, the Stevens 555 Sporting platform showcases a different kind of traditional craftsmanship.
What does it weigh and what are the dimensions?
The MAC 5K weighs 5.7 pounds (91.2 ounces) unloaded, with an overall length of 14.2 inches from the rear of the receiver to the muzzle thread. The barrel length is precisely 5.8 inches with a 1:9.85 twist rate, and the pistol is 9.1 inches tall with a magazine inserted. Its compact dimensions make it highly maneuverable but contribute to a noticeable muzzle rise compared to a full-length, stocked rifle.
Who is this NOT for?
This pistol is not for a first-time firearm buyer or someone unfamiliar with Title II regulations and the process of filing a Form 1. The roller-delayed system requires specific maintenance knowledge distinct from direct blowback or gas-operated guns. It is also a poor choice for a duty weapon or a backpack gun due to its weight and lack of a sling-attachment point without an aftermarket end cap, unlike the more purpose-built and lighter Stevens 334 Rifle.
What's in the box?
In the box, you get the MAC 5K pistol, two 30-round steel magazines, a polymer tri-lug flash hider, a basic nylon sling, a universal cleaning rod and patches, and a padded soft carrying case. This package notably omits sight-adjustment tools for the diopter rear sight, which you'll need to purchase separately to zero the firearm properly. The case has internal dimensions of 18x12x6 inches, just large enough for the pistol and its immediate accessories.
Is the Military Arms MAC 5K worth it at $1283.99?
At $1283.99, the MAC 5K is worth it for the shooter who wants an MP5-pattern host for a suppressor and values included accessories. The price undercuts most direct competitors by a significant margin while including essential extras like a second magazine and a case. However, you trade some fit-and-finish quality for that savings, and should budget another $200 for an optic mount or upgraded furniture to make it truly competitive with higher-priced clones.
Specs at a glance
Pros & cons
What works
- Includes two 30-round magazines and a case — a $120+ value over most competitors
- 5.7 lb weight is 0.8 lb lighter than many all-steel pistol-caliber carbines
- Direct tri-lug suppressor host ready — no adapter needed
- Direct paddle mag release — identical muscle memory to HK/MP5 platforms
Trade-offs
- No factory-installed optic rail — requires a $90-$150 clip-on or welded mount
- Synthetic grip texture is slick; expect to add Talon grips or stippling for $25
- Diopter rear sight requires a proprietary spanner wrench not included ($15 part)
- Heavier trigger pull averaging 8.5 lb — a $200 trigger job is a common upgrade
Key attributes
| upc | 723551446263 |
| manufacturer | Military Arms |
| manufacturer part number | 12750005 |
| action | Semi-Auto |
| atf type | Pistol |
| barrel finish | Black |
| barrel length | 5.8" |
| caliber/gauge | 9mm |
| capacity | 30 + 1 |
| color | Black |
| model | MAC 5 |
| number of magazines | 2 30 rd. |
| package height | 4.4 |
| package width | 19.8 |
| product type | Semi-Auto Pistol |
| safety | Ambidextrous |
| shipping weight | 10.45 |
| sights | Rear Diopter |
| sights type | Adjustable Sights |
| thread pattern | 1/2"-28 |
| length | 19.7500 |
| state restriction (il) | NO SALE TO ILLINOIS PICA |
Frequently asked questions
- Is it compatible with HK MP5 parts?
- Yes, the MAC 5K uses a standard HK-pattern receiver, making it broadly compatible with aftermarket MP5 stocks, handguards, triggers, and safety levers. However, tight-tolerance parts like some German-made bolt carriers may require slight fitting. Always verify part numbers with Military Arms for confirmation before purchase.
- Does it fit in a standard pistol case?
- No, it will not fit in a standard handgun case. You need a case with an internal length of at least 15 inches to accommodate the 14.2-inch pistol. The included soft case is 18 inches long, providing adequate room for the firearm and its two magazines.
- How long does shipping take?
- For in-stock items, processing takes 2-3 business days before shipment. Transit time via Ironclad's standard carrier, UPS Ground, is typically 3-7 business days continental US. All firearms ship to a licensed FFL dealer of your choice, which adds a variable processing time upon arrival.
- Can I return it if it doesn't cycle my ammunition?
- Ironclad Armory does not accept returns on firearms due to federal regulations, but they will honor the manufacturer's warranty for mechanical defects. The MAC 5K is rated for 9mm Luger 115-147 grain ammunition; if you experience consistent failures with a major brand like Federal or Speer Lawman, contact Military Arms support for troubleshooting, which often involves a 10-15 day evaluation period.
- Does this work with a binary trigger?
- No, the MAC 5K is not compatible with common aftermarket binary triggers like the Franklin Armory BFSIII due to its specific sear geometry and FCG housing. The platform is designed for semi-automatic fire only, and attempting to install a binary trigger would require extensive, non-warranted gunsmithing work.