---
product_id: 601935528
title: "MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed"
brand: "mtech usa"
price: "$101"
currency: NZD
in_stock: true
reviews_count: 5
category: "Mtech Usa"
url: https://www.desertcart.nz/products/601935528-mt-a840p-spring-assisted-joker-knife-4-75-inch-closed
store_origin: NZ
region: New Zealand
---

# Secure liner lock mechanism Spring-assisted one-handed deployment 3.25" stonewashed stainless steel blade MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed

**Brand:** mtech usa
**Price:** $101
**Availability:** ✅ In Stock

## Summary

> ⚡ Ready to deploy, built to last — your ultimate everyday edge.

## Quick Answers

- **What is this?** MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed by mtech usa
- **How much does it cost?** $101 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/601935528-mt-a840p-spring-assisted-joker-knife-4-75-inch-closed)

## 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

- • **Unmatched Value:** Premium all-metal construction and sharpness at a price that defies expectations.
- • **Carry with Confidence:** Includes a sturdy pocket clip for discreet, secure everyday carry.
- • **Rugged Stonewashed Steel:** Durable 440 stainless steel blade and handle with a sleek stonewashed finish that resists wear and hides scratches.
- • **Built for Safety & Rescue:** Integrated glass breaker and secure liner lock ensure readiness in emergencies.
- • **Effortless One-Handed Action:** Spring-assisted opening for lightning-fast deployment when it counts.

## Overview

The MTECH USA MT-A840P is a 4.75-inch closed, spring-assisted pocket knife featuring a 3.25-inch stonewashed 440 stainless steel blade and handle. Designed for quick one-handed use, it includes a secure liner lock, glass breaker, lanyard hole, and pocket clip, combining rugged durability with practical everyday carry functionality at an unbeatable price point.

## 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: Solid, all metal build, excellent quality control. Unbelievably good buy. All screws snug. Blade sharp, quick to deploy with spring assist, easy to close. Better quality build than many higher priced edcs. Heartily recommended as perhaps the best buy on desertcart.

## 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 | #15,765 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #34 in Pocketknives |
| Blade Edge | Plain |
| Blade Material | Stainless Steel |
| Brand | MTECH USA |
| Color | Stonewash |
| Customer Reviews | 4.3 4.3 out of 5 stars (532) |
| 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 |
| Product Dimensions | 5.08 x 2.54 x 13.34 cm; 100 g |
| Style | Modern |
| Weight | 0.45 Pounds |
| Width | 6 inches |

## Product Details

- **Age range (description):** Adult
- **Brand:** MTECH USA
- **Handle material:** Stainless Steel
- **Included components:** Spring Assist
- **Special features:** Spring Assist

## Images

![MT-A840P Spring Assisted Joker Knife, 4.75-Inch Closed - Image 1](https://m.media-amazon.com/images/I/61KaMxeI90L.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 S***C 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 D***L on 19 August 2025*

Solid, all metal build, excellent quality control. Unbelievably good buy. All screws snug. Blade sharp, quick to deploy with spring assist, easy to close. Better quality build than many higher priced edcs. Heartily recommended as perhaps the best buy on Amazon.

### ⭐⭐⭐⭐ 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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**Shop now:** [https://www.desertcart.nz/products/601935528-mt-a840p-spring-assisted-joker-knife-4-75-inch-closed](https://www.desertcart.nz/products/601935528-mt-a840p-spring-assisted-joker-knife-4-75-inch-closed)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-09*