---
product_id: 71214742
title: "Ner Modulus Round Counter Kit"
brand: "hasbro"
price: "AR$115598"
currency: ARS
in_stock: false
reviews_count: 10
url: https://www.desertcart.com.ar/products/71214742-ner-modulus-round-counter-kit
store_origin: AR
region: Argentina
---

# Accurate FPS tracking Energy-saving LED display Smart ammo counter Ner Modulus Round Counter Kit

**Brand:** hasbro
**Price:** AR$115598
**Availability:** ❌ Out of Stock

## Summary

> 🎯 Lock, Load, and Level Up Your Nerf Game!

## Quick Answers

- **What is this?** Ner Modulus Round Counter Kit by hasbro
- **How much does it cost?** AR$115598 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/71214742-ner-modulus-round-counter-kit)

## Best For

- hasbro enthusiasts

## Why This Product

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

## Key Features

- • **Universal Compatibility:** Fits all standard Nerf Elite darts and most blaster barrel attachments, making it the must-have upgrade for any Nerf arsenal.
- • **Intelligent Ammo Management:** Set and monitor your magazine capacity with a countdown or count-up ammo counter to never run dry mid-game.
- • **Energy-Efficient LED Display:** Bright, easy-to-read orange LED screen with auto shut-off to maximize battery life during extended play.
- • **Tactical Design & Durability:** Transparent Ghost Ops shell with integrated iron sights and tactical rail for mounting additional accessories.
- • **Precision Performance Metrics:** Track your blaster's velocity with real-time FPS/MPS readings for the ultimate edge in Nerf battles.

## Overview

The Nerf Modulus Round Counter Kit is a cutting-edge barrel attachment that combines a built-in chronograph and ammo counter, delivering precise FPS/MPS velocity tracking and smart ammo management. Compatible with standard Nerf Elite darts, it features an energy-saving LED display, tactical rail for accessories, and a sleek transparent design. Perfect for serious Nerf enthusiasts aiming to dominate every battle with data-driven performance.

## Description

It's Nerf or Nothing'! Nerf is the ultimate brand for fun, active play. Launch into awesome battles with Nerf dart blasters built with today's most advanced blaster technology. Join the N-Strike elite team with dart blasters that feature upgraded distance and the revolutionary elite dart. Nerf Mega series blasters feature bigger darts for bigger battles. The competition continues with Nerf sports gear designed so you can play like the pros. What are you waiting for? grab your gear, take your shot, and become part of Nerf Nation! Nerf and all related properties are trademarks of Hasbro. This copy is intended as placeholder text only and is not representative of individual items in the line.

Review: Averages 4-7 FPS higher velocity readings; 5-Stars, no compromise. - The Nerf Modulus Ghost Ops ChronoBarrel is a marvel of Nerf engineering at an affordable price. Not that it is an impossibility, but for what it offers the Nerf community, it was totally unexpected. I start most of my blaster review titles with “Averages XX FPS” (Feet Per Second) because I have a ProChrono Digital Chronograph at home that accurately measures the velocities of the darts fired by whatever is shot through the barrel (it is compatible with standard Nerf Elite darts only: any standard blue, green, white, orange, purple/grey, Starwars themed, Accustrike, and decorated Rebelle darts; be aware that MEGA darts or Rival Rounds/balls are not compatible). With this front barrel attachment you too can get a good idea of how hard your blaster is shooting in FPS or MPS (Meters Per Second). To toggle between the two units of measurement, simply press the + button and - button simultaneously. A great feature with this attachment is that the screen lights-up with a cool orange LED that has an energy-save feature that turns off by itself to save your battery life (1.5 AA x2 alkaline batteries required, but not included) after about 30 seconds of inactivity. If this is not enough, you get an ammo-counter function with it to count down (indicated by an arrow down 🔽) or count up (arrow up 🔼). To set the count down function to the right capacity magazine (or drum) you are using, press the +/- buttons to match the amount of darts in your magazine and it will tell you exactly what you have left in your magazine as you fire darts along with how fast it shot out of your blaster. As you reload another magazine it will start off at the maximum amount you set the previous capacity at (assuming you are using the same size magazines because the device has no way of knowing what size magazine you are loading into the magazine well). To use the count-up function, simply switch the top switch to the far right (🔼) and the rest is self explanatory. Well, there is a reset button (🔁) to restart the count-down or count-up. You can manually turn off the product to save even more energy by switching the main switch to the universal power button insignia. Now you may be wondering how accurate this Chrono-barrel is, and since I have an expensive piece of equipment that measures FPS, I can tell you. Using the Chrono-barrel I fired the shots off with my modified Stryfe into the ProChrono Digital chronograph. The darts passed through both chronographs and the numbers were consistently between 4 to 7 FPS apart, with the Chrono-barrel giving the higher FPS ratings. At first I thought that this was because the barrel was slowing the dart down a bit after the dart passed through to the ProChrono, but when measured independently, the Chrono-barrel still produced slightly higher numbers than what I consider the true rating from the ProChrono chronograph (I trust in my more expensive equipment). But don’t get me wrong, I am still amazed at this little device; the Chrono-barrel still can give great ballpark figures. Why, just now I was able to shoot my aftermarket Caliburn (a 3D-printed blaster known for it’s high FPS) through the Crono-barrel and it registered at 220.7 FPS. To acknowledge such a drastic difference in FPS proves that it is measuring something, and guarantees that you are getting a fairly reasonable ballpark figure to say the least. As far as appearance, it looks great. Like the rest of the Ghost Ops line, it has a transparent shell similar to the plastic of the discontinued “Sonic Series” (a Toys R Us exclusive). The inner barrel carries light from my Ghost Ops Evader very well. There is even a Nerf tactical rail under the barrel allow you to mount a standard Nerf attachment. If anyone else cared to notice, there is an iron-sight in front of the heads-up-display (HUD). It is hard to see because it is also made of clear plastic. In conclusion, this could possibly be the best Nerf attachment in existence. It offers an unprecedented value at a decent cost. You can finally test the strength of your blasters without having to spend a fortune. It looks nice in appearance, is tech-savvy in function, and it has a tactical rail. If ever there was a must-have item for nearly any Nerfer, this has got to be the one. Five Stars from me.
Review: If you like NERF, you really should buy - If you have a love for all things NERF then this is for you. This barrel attachment fits any nerf barrel attachment lug that we own and we have quite a few. It has a built in chronograph that measures how many feet per second your blaster is firing. It's fun to attach it to different blasters and see which gun is shooting the fastest/hardest. It also has a functioning ammo counter that you can set to count down from a specific number or just count up from zero. The screen is bright and easy to read, and the whole device didn't take long to figure out. I've gotten mine about 6 months ago and the two batteries are still working fine. At the 15$ price range, this is the most impressive attachment for the least amount of money.

## Features

- N-Strike Elite blasters and Elite darts deliver the ultimate in blaster performance
- Mega series blasters feature Mega Whistler darts that scream through the air
- Defend against a zombie invasion with Zombie Strike blasters
- Ignite the night with Fire Vision sports gear that glows when thrown
- Raise your game with the Pro-Grip football and Nero basketball set

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076KRHLJW |
| Batteries | 2 AA batteries required. |
| Best Sellers Rank | #397,142 in Toys & Games ( See Top 100 in Toys & Games ) #1,337 in Toy Foam Blasters |
| Customer Reviews | 4.6 4.6 out of 5 stars (959) |
| Department | boys |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.01 ounces |
| Item model number | E1621 |
| Manufacturer | Hasbro |
| Manufacturer recommended age | 8 years and up |
| Product Dimensions | 2.5 x 13 x 10 inches |
| Release date | August 1, 2018 |

## Images

![Ner Modulus Round Counter Kit - Image 1](https://m.media-amazon.com/images/I/71gVSbpKpwL.jpg)
![Ner Modulus Round Counter Kit - Image 2](https://m.media-amazon.com/images/I/91pKfTdggJL.jpg)
![Ner Modulus Round Counter Kit - Image 3](https://m.media-amazon.com/images/I/61qMhPdr09L.jpg)
![Ner Modulus Round Counter Kit - Image 4](https://m.media-amazon.com/images/I/71bX3wkvIKL.jpg)
![Ner Modulus Round Counter Kit - Image 5](https://m.media-amazon.com/images/I/81JYn973umL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Averages 4-7 FPS higher velocity readings; 5-Stars, no compromise.
*by M***I on September 20, 2018*

The Nerf Modulus Ghost Ops ChronoBarrel is a marvel of Nerf engineering at an affordable price. Not that it is an impossibility, but for what it offers the Nerf community, it was totally unexpected. I start most of my blaster review titles with “Averages XX FPS” (Feet Per Second) because I have a ProChrono Digital Chronograph at home that accurately measures the velocities of the darts fired by whatever is shot through the barrel (it is compatible with standard Nerf Elite darts only: any standard blue, green, white, orange, purple/grey, Starwars themed, Accustrike, and decorated Rebelle darts; be aware that MEGA darts or Rival Rounds/balls are not compatible). With this front barrel attachment you too can get a good idea of how hard your blaster is shooting in FPS or MPS (Meters Per Second). To toggle between the two units of measurement, simply press the + button and - button simultaneously. A great feature with this attachment is that the screen lights-up with a cool orange LED that has an energy-save feature that turns off by itself to save your battery life (1.5 AA x2 alkaline batteries required, but not included) after about 30 seconds of inactivity. If this is not enough, you get an ammo-counter function with it to count down (indicated by an arrow down 🔽) or count up (arrow up 🔼). To set the count down function to the right capacity magazine (or drum) you are using, press the +/- buttons to match the amount of darts in your magazine and it will tell you exactly what you have left in your magazine as you fire darts along with how fast it shot out of your blaster. As you reload another magazine it will start off at the maximum amount you set the previous capacity at (assuming you are using the same size magazines because the device has no way of knowing what size magazine you are loading into the magazine well). To use the count-up function, simply switch the top switch to the far right (🔼) and the rest is self explanatory. Well, there is a reset button (🔁) to restart the count-down or count-up. You can manually turn off the product to save even more energy by switching the main switch to the universal power button insignia. Now you may be wondering how accurate this Chrono-barrel is, and since I have an expensive piece of equipment that measures FPS, I can tell you. Using the Chrono-barrel I fired the shots off with my modified Stryfe into the ProChrono Digital chronograph. The darts passed through both chronographs and the numbers were consistently between 4 to 7 FPS apart, with the Chrono-barrel giving the higher FPS ratings. At first I thought that this was because the barrel was slowing the dart down a bit after the dart passed through to the ProChrono, but when measured independently, the Chrono-barrel still produced slightly higher numbers than what I consider the true rating from the ProChrono chronograph (I trust in my more expensive equipment). But don’t get me wrong, I am still amazed at this little device; the Chrono-barrel still can give great ballpark figures. Why, just now I was able to shoot my aftermarket Caliburn (a 3D-printed blaster known for it’s high FPS) through the Crono-barrel and it registered at 220.7 FPS. To acknowledge such a drastic difference in FPS proves that it is measuring something, and guarantees that you are getting a fairly reasonable ballpark figure to say the least. As far as appearance, it looks great. Like the rest of the Ghost Ops line, it has a transparent shell similar to the plastic of the discontinued “Sonic Series” (a Toys R Us exclusive). The inner barrel carries light from my Ghost Ops Evader very well. There is even a Nerf tactical rail under the barrel allow you to mount a standard Nerf attachment. If anyone else cared to notice, there is an iron-sight in front of the heads-up-display (HUD). It is hard to see because it is also made of clear plastic. In conclusion, this could possibly be the best Nerf attachment in existence. It offers an unprecedented value at a decent cost. You can finally test the strength of your blasters without having to spend a fortune. It looks nice in appearance, is tech-savvy in function, and it has a tactical rail. If ever there was a must-have item for nearly any Nerfer, this has got to be the one. Five Stars from me.

### ⭐⭐⭐⭐⭐ If you like NERF, you really should buy
*by P***H on January 19, 2021*

If you have a love for all things NERF then this is for you. This barrel attachment fits any nerf barrel attachment lug that we own and we have quite a few. It has a built in chronograph that measures how many feet per second your blaster is firing. It's fun to attach it to different blasters and see which gun is shooting the fastest/hardest. It also has a functioning ammo counter that you can set to count down from a specific number or just count up from zero. The screen is bright and easy to read, and the whole device didn't take long to figure out. I've gotten mine about 6 months ago and the two batteries are still working fine. At the 15$ price range, this is the most impressive attachment for the least amount of money.

### ⭐⭐⭐⭐ It’s awesome.
*by H***N on November 12, 2025*

Crazy low price for a freakin’ CHRONOGRAPH. This thing is pretty sweet. Heavy though. Definitely be careful storing it.

## Frequently Bought Together

- Ner Modulus Round Counter Kit
- Nerf Modulus Storage Stock

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-26*