---
product_id: 601935528
title: "MTECH USA MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed"
brand: "mtech usa"
price: "1504879₫"
currency: VND
in_stock: true
reviews_count: 5
category: "Mtech Usa"
url: https://www.desertcart.vn/products/601935528-mtech-usa-mt-a840p-spring-assisted-joker-knife-4-75
store_origin: VN
region: Vietnam
---

# Integrated glass breaker & sturdy handle Spring-assisted one-handed quick deployment 3.25" stonewashed stainless steel blade MTECH USA MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed

**Brand:** mtech usa
**Price:** 1504879₫
**Availability:** ✅ In Stock

## Summary

> ⚡ Ready, Set, Slice: The Everyday Edge You Can't Afford to Miss!

## Quick Answers

- **What is this?** MTECH USA MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed by mtech usa
- **How much does it cost?** 1504879₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/601935528-mtech-usa-mt-a840p-spring-assisted-joker-knife-4-75)

## Best For

- mtech usa enthusiasts

## Why This Product

- Trusted mtech usa brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Stonewashed Steel:** 3.25-inch 440 stainless steel blade and handle built to withstand daily challenges.
- • **Swift & Secure Deployment:** Spring-assisted opening for rapid, one-handed access that keeps you ready.
- • **Unmatched Value & Quality:** Premium knife performance at an unbeatable price—join the savvy carry community.
- • **Everyday Carry Convenience:** Includes pocket clip for discreet, safe, and easy carry wherever you go.
- • **Multi-Functional Rescue Tool:** Glass breaker tip and lanyard hole add life-saving versatility beyond cutting.

## Overview

The MTECH USA MT-A840P is a compact 4.75-inch closed spring-assisted knife featuring a 3.25-inch stonewashed 440 stainless steel blade and handle. Designed for quick one-handed deployment with a secure liner lock, it includes a glass breaker and pocket clip for versatile, everyday carry and emergency readiness—all at an exceptional value.

## Description

Measuring 4.75" closed; this spring assisted open knife from MTech Ballistic offers easy one handed deployment. Once open, the knife locks securely into place with its liner lock. This knife features a 3.25" stone washed 440 stainless steel blade. The stone washed stainless steel handle has a glass breaker on the end which can come in very handy in a rescue type situation. This knife comes complete with a pocket clip for easy and safe carry.

Review: For the price you just can’t beat it. It’s a sturdy well made knife. It is a little heavy because it’s built to be sturdy but love the spring assisted opening. Opens smoothly and quick if you are doing it correctly. For $8 I wasnt expecting near the quality of this knife that it turned out to be. And yes it is very sharp. Great knife all around
Review: As good as any mid priced folder. Quality as good as cold steel. With the handle shape and glass breaker can be used as a striking weapon even closed. Opens easily added a drop of oil to the pivot. Good handle weight without being too heavy. Came sharp, not super sharp but about five strokes on a ceramic rod and it was scary sharp , able to shave arm hair. I can't believe I only paid 8 bucks for this. Bought two more for a total of four. I have a big knife collection and carry one or two daily. This will be carried often. Some knife snobs might not like it but I rate my knives on their abilities. This is a keeper!

## Features

- 4.75" CLOSED
- 3.25" STONEWASH STAINLESS STEEL BLADE
- STONEWASH STAINLESS STEEL HANDLE
- INCLUDING GLASS BREAKER & LANYARD HOLE
- INCLUDES POCKET CLIP

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00JS3FMC6 |
| Age Range | Adult |
| Batteries Included? | No |
| Best Sellers Rank | #13,667 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #48 in Pocketknives |
| Blade Edge | Plain |
| Blade Length | 3.25 Inches |
| Blade Material | Stainless Steel |
| Brand | MTECH USA |
| Color | Stonewash |
| Customer Reviews | 4.3 4.3 out of 5 stars (540) |
| Date First Available | 3 August 2023 |
| Features | Spring Assist |
| Hand Orientation | Ambidextrous |
| Included Components | Spring Assist |
| Is Discontinued By Manufacturer | No |
| Item model number | MT-A840P |
| Manufacturer | Master Cutlery Inc. |
| Product Dimensions | 5.08 x 2.54 x 13.34 cm; 100 g |
| Shape | Rectangular |
| Size | 3.3" |
| Style | Modern |
| Weight | 0.45 Pounds |
| Width | 6 inches |

## Product Details

- **Age range (description):** Adult
- **Brand:** MTECH USA
- **Model name:** MT-A840P
- **Recommended uses for product:** Men's Accessory
- **Special features:** Spring Assist

## Images

![MTECH USA MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed - Image 1](https://m.media-amazon.com/images/I/61KaMxeI90L.jpg)
![MTECH USA MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed - Image 2](https://m.media-amazon.com/images/I/71l7jXJctZL.jpg)
![MTECH USA MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed - Image 3](https://m.media-amazon.com/images/I/31HBwmxcv-L.jpg)
![MTECH USA MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed - Image 4](https://m.media-amazon.com/images/I/71XJnerhUDL.jpg)
![MTECH USA MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed - Image 5](https://m.media-amazon.com/images/I/71hwGjFZzBL.jpg)

## Questions & Answers

**Q: I just got this knife.  Opened it twice, and on the second open, it's now stuck open.  How do I close it?**
A: I had a similar problem. If you don't know how to unlock it, simply look at the knife handle with blade facing you, and look near the guard. Under it should be a curved piece of metal inside the hollow area of the grip. Push that with your thumb to the left. That doesn't. Work, try right. When I first got it it was hard to close too. Just push with more force and it'll give way. It also eventually gets much easier. Thanks for asking! If you find no solution, contact the company, who's name is Mtech. Hope this helped!

**Q: Is this considered a gravity knife?**
A: Yes it's a great knife use it everyday

**Q: is the window punch, spring loaded?**
A: The window punch is actually as small pice of aluminum built into the butt of the knife and is stationary (not spring loaded), about 4/10ths c wide by 4/10ths cm high. If you use the zoom feature on by hovering over the picture of the knife you can see it. Though I haven't had to use the window breaker yet, I would suggest on buying a tool built for breaking a window. Also the blade is not spring assisted as the description would say but thumb assist. Use your thumb to press down on a stationary leaver and flick your wrist to open, the downward force of your thumb and momentum of your wrist open the blade and snap it in place.

**Q: no instructions in box. how do i close it?  ordered 2 another on the way**
A: Once the knife is opened there is a little metal tab you push to the side and you just fold the blade back in

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by T***R on 14 January 2026*

For the price you just can’t beat it. It’s a sturdy well made knife. It is a little heavy because it’s built to be sturdy but love the spring assisted opening. Opens smoothly and quick if you are doing it correctly. For $8 I wasnt expecting near the quality of this knife that it turned out to be. And yes it is very sharp. Great knife all around

### ⭐⭐⭐⭐⭐ Review
*by B***I on 22 February 2025*

As good as any mid priced folder. Quality as good as cold steel. With the handle shape and glass breaker can be used as a striking weapon even closed. Opens easily added a drop of oil to the pivot. Good handle weight without being too heavy. Came sharp, not super sharp but about five strokes on a ceramic rod and it was scary sharp , able to shave arm hair. I can't believe I only paid 8 bucks for this. Bought two more for a total of four. I have a big knife collection and carry one or two daily. This will be carried often. Some knife snobs might not like it but I rate my knives on their abilities. This is a keeper!

### ⭐⭐⭐⭐ Review
*by D***D on 2 June 2025*

Heavy!... Solid knife ...good flip action and closes easy....not a knife to carry all day in your pocket or on your pants....but worth the money for anything else.... Crazy sharp.... careful it's razor like!... I like it!

## Frequently Bought Together

- MTECH USA MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed,Stonewash
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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-04*