The Radical Firearms 10.50″ AR Pistol with 10″ RPR Rail gives you a compact, maneuverable platform that’s ready for dynamic shooting right out of the box. Built on MIL-STD upper and lower receivers, this pistol uses a free-float rail to keep the handguard cool and offers ample room for lights, grips, or lasers. At just $485.59, it’s an accessible entry point for families and shooters looking for a reliable AR pistol that handles tight spaces without sacrificing accessory options.
| Manufacturer | Radical Firearms |
|---|---|
| Model | FP105762X39HBAR10RPRBM |
| Material | MIL-STD 7075 T6 aluminum upper and lower receivers; polymer grip and pistol brace |
| Compatibility | Standard AR-15 lower parts and accessories |
| Finish | Black anodized receivers; black polymer furniture |
| Weight | Approximately 5.2 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- 10.50″ Barrel: Keeps the overall length short for easy handling in tight spaces like vehicle compartments or home hallways, while still delivering accurate shots out to 100 yards.
- 10″ RPR Free-Float Rail: Cools the barrel faster and gives you a full-length top Picatinny rail plus M-LOK slots on the sides and bottom, so you can mount lights or grips exactly where you want them.
- MIL-STD Receivers: Made from 7075 T6 aluminum and hard-coat anodized, these receivers meet military specs for durability and will accept nearly any AR-15 part you upgrade later.
- Polymer Pistol Brace: Lightweight and comfortable against your shoulder or arm, it helps steady your aim without adding heavy metal or sharp edges.
- Selector-Style Safety: Familiar AR-15 safety operation means no learning curve if you already shoot an AR; just flip it to fire and go.
Who It’s For
This Radical Firearms 10.50″ AR pistol is a great fit for families who want a compact defensive tool that’s easy to stash in a safe or range bag. It’s also ideal for new shooters who want an affordable AR pistol that’s simple to operate and upgrade. If you’re a youth shooter or smaller-framed adult, the shorter length and light weight make it much easier to handle than a full-size rifle.
Pros & Cons
- Pros: Affordable price point for a complete pistol; free-float rail stays cool under rapid fire; MIL-STD receivers accept standard AR parts for easy customization; compact and lightweight for easy transport.
- Cons: The polymer brace is functional but less adjustable than some aftermarket options; the barrel profile is heavy for its length, which helps with heat but adds a little weight up front.
Comparison
| Feature | Radical Firearms 10.50″ AR Pistol | Zev Technologies OZ9C Pistol | Geissele Super Duty Pistol |
|---|---|---|---|
| Caliber | 5.56 NATO | 9mm | 5.56 NATO |
| Barrel Length | 10.50″ | 4.5″ | 11.5″ |
| Rail System | 10″ RPR Free-Float | Integrated slide | Geissele MK4 9.3″ |
| Receiver Material | MIL-STD 7075 T6 aluminum | 7075 T6 aluminum | 7075 T6 aluminum |
| Weight | ~5.2 lbs | ~1.9 lbs | ~6.1 lbs |
| Price | $485.59 | $1,900+ | $1,600+ |
The Zev OZ9C is a 9mm handgun with a much shorter barrel, so it’s not a direct AR pistol competitor, but it’s often cross-shopped for compact defense. The Geissele Super Duty is a premium 11.5″ AR pistol that costs over three times as much. For the money, the Radical Firearms pistol gives you a solid, shootable platform you can customize later without breaking the bank.
Video
FAQ
What caliber does this Radical Firearms 10.50″ AR Pistol use?
This model is chambered in 5.56 NATO and also accepts .223 Remington ammunition. Per Radical Firearms specs, the 10.50″ barrel is optimized for 5.56 pressures but runs .223 reliably too.
Is the 10″ RPR rail compatible with standard M-LOK accessories?
Yes, the RPR rail features M-LOK slots on the 3, 6, and 9 o’clock positions, so you can attach lights, vertical grips, or bipods without needing adapters.
Can I swap the polymer brace for a different brace or stock?
Yes, the receiver extension (buffer tube) is standard mil-spec diameter, so you can replace the brace with any aftermarket AR pistol brace or, if you later register it as a Short-Barreled Rifle (SBR), a standard rifle stock.
How accurate is the 10.50″ barrel at typical pistol distances?
Most shooters can expect 2–3 MOA groups at 50 yards with quality ammunition. The free-float rail helps maintain accuracy by keeping pressure off the barrel.
✔ Nationwide delivery (all 50 states)
✔ Ships 1-2 business days
✔ 30-day returns
✔ Secure checkout
Looking for more compact AR options? Check out our AR Pistols or AR-15 Lower Parts. You can also browse AR-15 Uppers to build your own.
Last updated: April 2026
FFL Transfer & Firearms Laws for Radical Firearms 10.50″ AR Pistol with 10″ RPR Rail
All firearms, including the Radical Firearms 10.50″ AR Pistol with 10″ RPR Rail, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the Radical Firearms 10.50″ AR Pistol with 10″ RPR Rail is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
Frequently Asked Questions About This Product
Why buy Radical Firearms 10.50″ AR Pistol with 10″ RPR Rail from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy Radical Firearms 10.50″ AR Pistol with 10″ RPR Rail?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is Radical Firearms 10.50″ AR Pistol with 10″ RPR Rail available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: AR Pistols.
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Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
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FFL Transfer & Firearms Laws
All firearms, including the Radical Firearms 10.50″ AR Pistol with 10″ RPR Rail, must be shipped to a licensed Federal Firearms License (FFL) dealer. A background check and any required local paperwork must be completed before you can take possession.
How It Works
- Place your order online.
- Send us your preferred local FFL dealer info.
- We ship the firearm to your FFL after verification.
- Complete background check and pick up from your dealer.
Legal Compliance
We comply with all U.S. firearm laws. It is your responsibility to ensure the Radical Firearms 10.50″ AR Pistol with 10″ RPR Rail is legal in your state. Some states (e.g. CA, NY, NJ) have restrictions on magazine size or certain features.
Helpful Links
Need help? Contact our team — we’ll guide you through selecting a compliant firearm and the FFL transfer process.
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