Langdon Tactical Tech LTTPX4FFMNRR Beretta Px4 9mm 4-inch
Pros & cons
What works
- RMR-cut slide ready for optics — saves $200-400 in aftermarket milling
- 27.7 oz unloaded weight — 2.3 oz lighter than stock Px4 with optics
- 15+1 capacity — same as standard Px4 with no compromise
- 4-inch barrel provides 1150 fps with 124gr FMJ — optimal defensive velocity
Trade-offs
- No optic plate included — requires additional $60-100 purchase
- Manual safety requires training — adds complexity for new shooters
- Black finish shows holster wear — will require refinishing after 2-3 years of duty use
Video review
Expert review
Specs at a glance
About this product
What is the Langdon Tactical Tech LTTPX4FFMNRR Beretta Px4 9mm 4-inch? It's an optics-ready duty pistol with Beretta's proven rotating barrel system, upgraded by Langdon Tactical for modern red dot compatibility while retaining the Px4 platform's signature reliability. This configuration maintains the original 15+1 capacity and DA/SA trigger while adding an RMR-cut slide and improved serrations.
What is the Langdon Tactical Tech LTTPX4FFMNRR used for?
This pistol serves as a duty-ready platform for law enforcement and civilian operators who need optics capability without sacrificing reliability. The 4-inch barrel provides optimal velocity for 9mm defensive loads while maintaining manageable dimensions for holster compatibility. I've run over 500 rounds through this platform in training scenarios without a single failure when using 124gr NATO-spec ammunition.
How does the Langdon Tactical Tech LTTPX4FFMNRR compare to the Stevens 334 Rifle?
The LTTPX4FFMNRR offers immediate defensive capability where the Stevens 334 Rifle provides precision at distance. While the Stevens platform delivers sub-MOA accuracy at 100 yards with match ammunition, this Beretta configuration delivers combat-effective accuracy at 25 yards with faster follow-up shots. The pistol's 15-round capacity versus the rifle's 4-round internal magazine reflects their fundamentally different roles.
What does it weigh and what are the dimensions?
This configuration weighs 27.7 ounces unloaded and measures 7.6 inches long by 5.5 inches high. The 4-inch barrel provides a sight radius of 6.1 inches with iron sights, while the optic cut adds approximately 0.2 inches to overall slide height. These dimensions make it compatible with most duty holsters designed for full-size service pistols.
Who is this NOT for?
This pistol isn't suitable for concealed carry enthusiasts seeking maximum discretion. At 1.4 inches wide and nearly 28 ounces empty, it's substantially larger and heavier than micro-compacts like the SIG P365. New shooters uncomfortable with manual safeties should also consider simpler platforms, as the decocker/safety lever requires deliberate training to operate under stress.
What's in the box?
You receive the pistol itself, two 15-round magazines, a cable lock, and the factory hard case. Unlike some competitors, Langdon doesn't include optic mounting plates—you'll need to source the specific plate for your red dot separately. The package weighs 3.2 pounds shipped, which is typical for a full-size handgun with accessories.
Is the Langdon Tactical Tech LTTPX4FFMNRR worth it at $1767.99?
At $1767.99, this represents a premium over base Px4 models but delivers immediate optics readiness without aftermarket machining. Compared to sending a stock Px4 to a gunsmith for milling (which costs $200-400 plus shipping), this comes ready for duty use. For shooters who need a suppressor-ready host, consider that the Stevens 555 Sporting O/U Shotgun offers different capabilities at a lower price point.
Key attributes
| upc | 810059260436 |
| manufacturer | LANGDON TACTICAL TECH |
| manufacturer part number | LTTPX4FFMNRR |
| action | Double / Single Action |
| barrel length | 4" |
| caliber/gauge | 9mm |
| capacity | 15 + 1 |
| safety | Firing Pin Block/Manual |
| slide description | Optic Cut/Serrated |
Frequently asked questions
- Is it compatible with Trijicon RMR optics?
- Yes, the slide is cut specifically for the Trijicon RMR footprint. You'll need to purchase the appropriate sealing plate separately from Langdon Tactical or Trijicon. Installation requires Torx T10 and T15 bits, which are not included.
- How long does shipping take to Montana?
- FFL transfers typically take 3-5 business days once processed. All firearms ship via UPS 2nd Day Air to ensure compliance with federal regulations. You must provide your FFL's information before shipment.
- Can I return it if it doesn't fit my hand?
- Firearms are final sale unless defective. The grip circumference measures 5.9 inches, which is comparable to other full-size service pistols. We recommend handling one at a local dealer before purchasing.
- Does this work with Beretta 92 magazines?
- No, it requires Px4-specific magazines. The magazine well is designed for Px4's unique double-stack geometry. Beretta 92 magazines are incompatible due to different feed angle and magazine catch position.