Angstadt Arms MDP-9

Angstadt Arms MDP-9

Our team independently chooses and evaluates products. If you make a purchase using links from our website, we might receive a commission, which assists in funding our product testing.

  • Design Features
  • Build Quality
  • Recoil
  • Fun Factor
4.1/5Overall Score
  • Action: Roller-delayed blowback
  • Material: 7075-T6 aluminum
  • Weight: 3.7 lbs
  • Length: 14″
  • Roller-delayed Blowback System
  • Included Tri-Lug Adaptor
  • Price

This is one gun that I have sought after for quite some time because, well, roller-delayed guns intrigue me. The Angstadt Arms MDP was one of those guns that took a long time to come to the market after the initial announcement, but good things take time.

Let me dive into this review and tell you all about the MDP and why you might need to add this gun to your collection.

Angstadt Arms MDP 9

Angstadt Arms MDP

Caliber: 9mm
Action: Roller-delayed
Mags: Glock Mags

MDP, you say?

The MDP is a roller-delayed AR-9 pistol made by Angstadt Arms and has been on the market since January of 2022.

MDP’s claim to fame is its roller-delayed design similar to the H&K MP5 and Century Arms AP5.

But why would you want roller delay blowback anyway? Here are the four primary reasons:

Recoil Reduction: Roller-delayed blowback systems excel at reducing felt recoil. The delayed unlocking of the bolt allows for a portion of the chamber pressure to dissipate before the bolt starts to move, resulting in smoother and softer recoil compared to straight blowback designs.

Muzzle Rise Mitigation: By delaying the opening of the bolt, roller-delayed blowback systems effectively minimize muzzle rise. This leads to better control over the firearm during rapid fire and faster follow-up shots.

Enhanced Suppression: Roller-delayed blowback firearms are known for their exceptional suppressor performance. The delayed unlocking of the bolt reduces the amount of gas escaping through the ejection port, resulting in reduced noise, gas blowback, and improved overall shooting experience when using suppressors.

Reliability: Roller-delayed blowback systems are renowned for their reliability and durability. The robust locking mechanism provided by the rollers ensures consistent and secure chambering and extraction, even under adverse conditions.

Why a PCC?

Pistol Caliber Carbines (PCC) are great guns for very specific tasks. Close Quarters Battles (CQB) and home defense are just two great examples of use cases for PCC’s.

They are also great-range guns that are fun and typically inexpensive to shoot. Light recoil and affordable ammo go hand-in-hand when you take about PCCs.

Angstadt Arms MDP 9

Angstadt Arms MDP

Caliber: 9mm
Action: Roller-delayed
Mags: Glock Mags

Ergonomics & Firearm Overview

PCCs are known to have better ergonomics making them much more favorable from an end user’s perspective.


Some of the MDP’s controls mirror that of an AR-15 which makes some AR-15 accessories are interchangeable with the Angstadat Arms MDP.

Angstadt Arms MDP Safety

The safety is one of those parts that can be swamped out for nearly any AR safety. Which I like because I’m a pretty big fan of the Radian safe selectors.

Pistol Grip

Angstadt also kept their lower design mil-spec to accept nearly any AR pistol grip module.

Angstadt Arms MDP Grip

The good thing about this grip is it’s the B5 Systems grip and if you aren’t familiar with B5 Systems their grips are fantastic. They are Made in the USA and feature and extremely grippy texture.

Unless you prefer rubber textured grips you should really like this grip. It has a better fit and feel than even the Magpul grips.

Magazine Release

Magazine releases can be a hotly contested control on any gun. The magazine release on the MDP is located on the right side much like you’d expect from an AR style firearm.

Angstadt Arms MDP Magazine Release

It is slightly upgraded in that it has a large button you can press with an attached panel for people with shorter fingers.

Both button options work really well the only thing I wish this gun had is an ambidextrous magazine release.

Angstadt Arms MDP 9

Angstadt Arms MDP

Caliber: 9mm
Action: Roller-delayed
Mags: Glock Mags

Magazine Well

If you don’t know already this gun takes Glock magazines *Shocked face* most PCCs/AR9s take Glock mags, so Glock owners rejoice!

Angstadt mdp magwell

The magazine well of the MDP is extremely flared and funneling magazines into this gun is extremely easy and fluid.

The magazine well is short enough to take any size Glock double stack 9mm magazines.

Bolt Release/Hold open

The bolt release/hold open is straightforward forward it’s an AR-15 style paddle left side of the gun.

Angstadt bolt release

It functions but it’s nothing to write home about, not that it needs to be anything special.

Internally it’s a bit different, for the roller delay function to work it had to have a proprietary bar on the inside that holds the bolt open from the front of the bolt.

Angstadt bolt release internal

Charging Handle Configuration

MDP’s have a forward-side charging handle much like the MP5/AP5. The charging handle functions well and is smooth with a bit of resistance.

One of the really nice features of the charging handle is that it is non-reciprocating. This simply means it doesn’t move when you’re shooting so you can hold your hand behind it on the handguard.

Angstadt mdp charging handle

It also features an ambidextrous design allowing you to switch the handle from left to right depending on your needed use case.

I don’t mind the straight charging handle but I think Angstadt Arms has an opportunity here to create their own aftermarket charging handles to give customers options but for a cost.

Angstadt Arms MDP 9

Angstadt Arms MDP

Caliber: 9mm
Action: Roller-delayed
Mags: Glock Mags

Stock and Brace Option

The Angstadt Arms MDP comes standard as a pistol, you can also order directly from Angstadt as a short barrel rifle.

Angstadt mdp 1913 stock attachment

The MDP is extremely versatile when it comes to stocks because it has an included 1913 rail that you can attach to a stock or folding mechanism.

It even has a QD slide mount built into the bottom of the 1913 rail.

Muzzle Device

One thing that I really like is similar to the MP5 this gun comes with a tri-lug adaptor. However, I found that depending on the suppressor it won’t lock on because the tri-lug is too close to the gun.

Angstadt mdp muzzle device

I found that to be a non-issue with the MDP as the tri lug is plenty far from the handguard making threading a 9mm silencer a breeze.

Angstadt Arms MDP Ammo

Some pistol caliber carbines can be a bit funny with ammo but I don’t think you’ll have any issues with the MDP cycling whatever you throw its way.

Angstadt Arms MDP Final Thoughts

The MDP is one gun that I have been drooling over for a while now and I’m glad to have finally gotten my hands on it for some first-hand use.

I really like the MDP I like how it feels and it really makes me feel like I’m holding a modernized MP5.

I think this gun has some very good long-term possibilities and I think if you are in the market for a high-end pistol caliber carbine then this should be #1 on your list.

If you want the best suppressed gun from Angstadt Arms go check out the new Vanquish rifle.

Angstadt Arms MDP 9

Angstadt Arms MDP

Caliber: 9mm
Action: Roller-delayed
Mags: Glock Mags

What is the MSRP for Angstadt MDP-9?

The MSRP of the MDP is between $2,570.00 – $2,695.00 depending on configuration and color.

How long is the MDP-9?

The MDP is an impressively short 14″ long.

What is the difference between a UDP-9 and a MDP-9?

The MDP is a roller delay blowback design where as the UDP is a direct impingement gas system design.

Who makes Angstadt Arms?

Angstadt Arms is a firearms manufacturer in Charlotte, North Carolina.

If you liked our review we would appreciate a share!
Michael Savage
Michael Savage

Michael is the President of Lynx Defense and an avid gun owner and outdoors man. He's passionate about helping find the best bang for your buck and helping others learn about firearms and the industry as a whole.

Articles: 258

Not a Bobcat Podcast

Monthly Podcast on Guns, Bags, and Industry

Concealed Carry Insurance

Protect yourself and all those who carry concealed in your house.

Read More

Leave a Reply

Your email address will not be published. Required fields are marked *