# Maxim Defense PDX .300 AAC BLACKOUT Tactical Semi-Auto 20-Round

**Brand:** Maxim Defense
**Category:** Bullpup Rifles
**Caliber:** .300 AAC Blackout

## Specifications

- **Caliber:** .300 AAC Blackout
- **Capacity:** 20 rounds
- **Weight:** 137.6 oz
- **UPC:** 680017478230
- **SKU:** UCByGi2MQ

## Description

The Maxim Defense PDX is a semi-automatic firearm in .300 AAC Blackout built around a subcompact platform. At 18.75 inches overall length and 8.6 lbs, it's designed for close-quarters use where a full-length rifle would be awkward. The direct impingement gas system handles cycling, and the HATEBRAKE muzzle booster is there to manage the extra gas energy that comes with a very short barrel.

### Key Specifications
- **UPC:** 680017478230
- **Caliber:** .300 AAC BLACKOUT
- **Action:** Semi-Automatic
- **Capacity:** 20 Rounds
- **Weight:** 8.6 lbs

### Features
- DI gas system for reliable cycling
- HATEBRAKE muzzle booster reduces recoil and muzzle rise on the short-barrel platform
- ALG Combat Trigger with smooth pull and crisp break
- Maxim SCW PDW Brace for stability without added bulk
- 18.75 inches overall length

## What Reviewers Say

*Quoted verbatim from YouTube reviews. Each link opens the video at the moment quoted.*

> One negative that i'm going to point out here is that it has yfs bolts on there those are i've never had an issue with them personally however they're not mil-spec so just take that for what it's worth.
>
> — [Mrgunsngear Channel](https://www.youtube.com/watch?v=rmttDPKfcZA&t=618s)

> One thing i definitely do like and give it credit for is having a very nice flared mag well there's absolutely no reason not to flare magwell.
>
> — [Mrgunsngear Channel](https://www.youtube.com/watch?v=rmttDPKfcZA&t=670s)

> It's a fantastic flash hiding muzzle device that's some of the short aks use and this uses basically the same thing.
>
> — [Mrgunsngear Channel](https://www.youtube.com/watch?v=rmttDPKfcZA&t=768s)

## What Customers Say

*AI-generated insights from customer reviews*

Discussion around the Maxim Defense PDX in .300 AAC Blackout covers a consistent set of themes.

The compact size is the starting point for most positive takes. Owners like how the short overall length (18.75 in) handles in tight spaces, and the .300 Blackout caliber works well with subsonic loads and suppressors. Build quality gets good marks: owners describe it as feeling solid, and the ALG trigger gets specific praise for a clean break. The ergonomics, particularly the controls layout, come up as intuitive and comfortable under pressure.

The main criticisms focus on cost. Some buyers feel the price sits high relative to other compact .300 Blackout options. Magazine capacity at 20 rounds is acceptable to most but a few owners want higher-capacity options. Customer support experiences are split. Some owners report smooth interactions with Maxim Defense, others mention delays.

The PDX is aimed at a specific use case: a compact, suppressor-friendly .300 Blackout platform for home defense or tactical work. For buyers who want that combination, the trade-offs on price are generally accepted.

## Pricing

**6 offers available**

| Vendor | Price |
|--------|-------|
| Buds Gun Shop | $2005.49 |
| Grabagun Com | $2079.99 |
| Gunbuyer Com | $2209.32 |
| Impactguns Com | $2245.50 |
| Shootingsurplus Com | $2245.50 |
| Guns Com | $2314.99 |

## Similar Products

- [Maxim Defense PDX .300 AAC Blackout 5.5in Black](https://gunsnation.com/p/maxim-defense-pdx-300-aac-blackout-5-5in-black/UCByGi2Mo)
- [Maxim Defense PDX .300 AAC Blackout 5.5in FDE](https://gunsnation.com/p/maxim-defense-pdx-300-aac-blackout-5-5in-fde/UCByGi2Mh)
- [Maxim Defense PDX Tactical .300 Blackout 5.5" Compact Pistol](https://gunsnation.com/p/maxim-defense-pdx-tactical-300-blackout-5-5-compact-pistol/UCByGiAAM)
- [Maxim Defense PDX .300 Blackout 5.5in FDE](https://gunsnation.com/p/maxim-defense-pdx-300-blackout-5-5in-fde/UCByGi2MJ)
- [Maxim Defense PDX .300 Blackout 5.5" FDE Tactical Pistol Kit](https://gunsnation.com/p/maxim-defense-pdx-300-blackout-5-5-fde-tactical-pistol-kit/UCByGi2NJ)
- [Maxim Defense PDX Tactical 7.62x39mm Semi-Auto Pistol - Black](https://gunsnation.com/p/maxim-defense-pdx-tactical-7-62x39mm-semi-auto-pistol-black/UCByGiA6m)

---
*Data from [GunsNation](https://gunsnation.com)*