Transporter 300 Blackout Side Folding AR Pistol with 7.5
Specs at a glance
About this product
Kansas Gunshop is a Wichita, KS-based retailer specializing in firearms and FFL transfers. The Transporter 300 Blackout Side Folding AR Pistol with 7.5 is a compact, highly portable AR pistol chambered in .300 Blackout. Its side-folding brace significantly reduces overall length for storage and transport. Available now for $899.00.
Reviewed by Derek, Owner & FFL Holder at Kansas Gunshop. Kansas-licensed FFL dealer since 2008, NRA Range Safety Officer.
Last updated: April 2026
What are the specifications of the Transporter 300 Blackout AR Pistol?
This Transporter 300 Blackout Side Folding AR Pistol with 7.5-inch barrel is built for compact performance. Here's a breakdown of what you're getting:
| Product Type | AR Pistol |
|---|---|
| Caliber | .300 Blackout |
| Barrel Length | 7.5 inches |
| Overall Length (Folded) | Approx. 18 inches |
| Overall Length (Unfolded) | Approx. 26 inches |
| Material | 7075-T6 Aluminum (receiver), Steel (barrel) |
| Manufacturing | CNC Machined Receivers |
| Finish | Hard Coat Anodized (Type III Class 2) |
| Hardness/Quality | Mil-Spec Components |
| Compatibility | Standard AR-15 parts (excluding buffer system when folded) |
| Installation/Usage | Ready to use out of the box (requires FFL transfer) |
| Weight | Approx. 5.5 lbs (unloaded) |
| Country of Origin | USA |
| Condition | New |
| SKU | TRNSPTR300BLK7.5 |
What are the key features of this 300 Blackout AR pistol?
The Transporter 300 Blackout Side Folding AR Pistol with 7.5-inch barrel offers several features that make it a practical choice for specific applications:
- Side-Folding Brace: The most prominent feature, allowing for a significantly reduced overall length. This makes it easier to store in tight spaces like vehicle compartments, backpacks, or small safes.
- 7.5-inch Barrel: Optimized for the .300 Blackout cartridge, especially when running suppressed. This length helps maintain velocity with subsonic loads while keeping the overall package compact.
- .300 Blackout Chambering: A versatile cartridge, effective for both suppressed and unsuppressed use, offering good terminal ballistics in a short barrel.
- Standard AR-15 Controls: Familiarity for anyone accustomed to the AR platform, ensuring a quick learning curve and easy manipulation.
- M-LOK Handguard: Provides attachment points for lights, lasers, and other accessories, allowing for customization to fit your needs.
- Pistol Brace: Offers a stable shooting platform, enhancing control and accuracy compared to a bare buffer tube.
Who is the Transporter 300 Blackout Side Folding AR Pistol for?
This particular AR pistol fits a niche for those prioritizing portability and specific performance characteristics.
Buy it if:
- You need an extremely compact firearm for discreet transport or storage.
- You are looking for a truck gun or a firearm for tight spaces.
- You plan to run suppressed, as the .300 Blackout with a 7.5-inch barrel is well-suited for this.
- You appreciate the versatility of the .300 Blackout cartridge for both supersonic and subsonic loads.
- You want a capable defense firearm that is easily maneuverable indoors or in confined environments.
- You are an experienced AR platform user looking for a specialized, compact variant.
Skip it if:
- You are primarily looking for a long-range precision firearm; a 7.5-inch barrel isn't ideal for maximizing .300 Blackout's range potential.
- You prefer a traditional rifle form factor and don't need the extreme compactness of a folding pistol.
- You are on a very tight budget and don't require the specific features of a side-folding AR pistol; standard AR pistols might be more cost-effective.
- You are new to the AR platform and prefer something with less recoil or a longer sight radius for initial training.
What are the pros and cons of this AR pistol?
Every firearm has its strengths and weaknesses. Here's what I've observed with the Transporter 300 Blackout Side Folding AR Pistol with 7.5:
Pros:
- ✅ Exceptional Portability: The side-folding brace makes this pistol incredibly compact, fitting into spaces where a standard AR would not.
- ✅ Versatile Caliber: .300 Blackout performs well from a short barrel, especially when suppressed, offering good energy for defensive applications.
- ✅ Maneuverability: The short barrel and overall length make it easy to handle in close quarters.
- ✅ AR-15 Familiarity: Uses standard AR-15 controls and magazines, reducing the learning curve for most users.
- ✅ Accessory Ready: M-LOK handguard allows for easy attachment of lights, optics, and other essential gear.
Cons:
- ❌ Limited Range: The 7.5-inch barrel, while great for compactness and suppression, limits the effective range of the .300 Blackout cartridge compared to longer barrels. For longer ranges, consider an AR-15 rifle.
- ❌ Recoil/Muzzle Blast: Short barrels can increase perceived recoil and muzzle blast, especially with supersonic loads.
- ❌ Price Point: The side-folding mechanism adds to the cost compared to a fixed-brace AR pistol. If budget is a primary concern, explore our other AR pistol options.
How does the Transporter 300 Blackout compare to other AR pistols?
When looking at the Transporter 300 Blackout Side Folding AR Pistol with 7.5, it's helpful to see where it stands against other options on the market. We'll compare it to a budget-friendly option and a more premium offering.
| Feature | Transporter 300 Blackout Side Folding AR Pistol | Budget AR Pistol (e.g., Palmetto State Armory) | Premium AR Pistol (e.g., Daniel Defense DDM4 300S) |
|---|---|---|---|
| Material | 7075-T6 Aluminum, Steel | Forged Aluminum, Steel | 7075-T6 Aluminum, Cold Hammer Forged Steel |
| Quality | Mil-Spec Components, Reliable | Functional, Entry-Level | High-End, Duty-Grade |
| Compatibility | Standard AR-15 (with folding brace considerations) | Standard AR-15 | Standard AR-15 |
| Shipping | Same-day from Wichita, KS | Varies by retailer | Varies by retailer |
| Lifespan/Durability | Designed for regular use, good longevity | Good for recreational use | Built for extreme durability and heavy use |
| Price | $899.00 | ~$600-750 | ~$1800-2200+ |
The Transporter sits squarely in the mid-range, offering a significant feature (side-folding brace) not typically found on budget models, while remaining more accessible than top-tier brands.
Frequently Asked Questions about the Transporter 300 Blackout Side Folding AR Pistol
Is the Transporter 300 Blackout Side Folding AR Pistol with 7.5 legal in Kansas?
Yes, AR pistols are legal to own in Kansas for individuals 21 years of age and older. As an FFL holder, Kansas Gunshop ensures all transfers comply with federal and state laws. Always verify local ordinances.
What is the main advantage of a side-folding AR pistol?
The primary advantage is extreme compactness. The side-folding brace significantly reduces the overall length, making the firearm easier to store, transport discreetly, and maneuver in confined spaces like vehicles or tight indoor environments.
Can I convert this AR pistol into a rifle?
Converting an AR pistol to a rifle (by adding a stock and a barrel 16 inches or longer) is generally permissible under federal law. However, converting it to a short-barreled rifle (SBR) by adding a stock with a barrel under 16 inches requires NFA registration and approval. Always consult ATF regulations before making modifications.
What kind of optics should I use with a 7.5-inch 300 Blackout AR pistol?
Given the short barrel and typical use cases (close to medium range), a red dot sight or a holographic sight is an excellent choice. These offer quick target acquisition and are well-suited for the effective range of this pistol. A low-power variable optic (LPVO) could also work if you desire some magnification without excessive weight.
Does the side-folding mechanism affect reliability?
Modern side-folding brace mechanisms are generally robust and reliable. They are designed to allow the firearm to cycle normally when unfolded. When folded, the firearm typically cannot be fired, as the buffer tube system is interrupted. Always ensure the brace is fully locked into position before firing.
What is the effective range of a 7.5-inch .300 Blackout barrel?
While .300 Blackout can be effective out to 200-300 yards with longer barrels, a 7.5-inch barrel is typically optimized for closer engagements, generally within 100-150 yards, especially with supersonic ammunition. Subsonic ammunition will have an even shorter effective range, often within 50-75 yards, primarily for suppressed use.
Where can I buy AR pistols online?
You can buy AR pistols online from licensed FFL dealers like Kansas Gunshop (kansas-gunshop.com). We facilitate the online purchase and arrange for the firearm to be shipped to your local FFL dealer for transfer, ensuring all legal requirements are met.
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Last updated: April 2026