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Reviews of seven of the best full-auto Nerf blasters, ranked on performance, magazine capacity, design, and that classic machine-gun feel.
Fully automatic Nerf blasters pack serious firepower and style. They’re built for fast-paced battles and nonstop fun, even if they’re not always the most practical choice and need batteries to run.
Every Nerf fan should own at least one of these flywheel-powered blasters with acceleration triggers. Below, we’ve rounded up the seven best full-auto Nerf guns available right now.
What Qualifies as a Full-Auto Nerf Blaster?
Fully automatic Nerf blasters are battery-powered guns that fire continuously when you hold down the trigger. They’re also called motorized or machine Nerf guns.
Inside each blaster is a flywheel system, powered by batteries, that launches the darts. To engage it, you’ll usually need a separate acceleration trigger or a simple on/off switch.
The overall performance of a full-auto Nerf gun depends heavily on how efficient the flywheel system is.
Rounds per Second
One way to measure performance is by looking at how many rounds a blaster can fire per second. In the past, hitting 2–3 darts per second was considered impressive. Today, the bar is much higher, especially with the Nerf Rival series.
The Rival Nemesis, for example, can shoot five rounds per second, while the Rival Prometheus takes it to another level with a staggering eight rounds per second.
Firing Capacity
Of course, with that kind of speed, you’ll burn through ammo quickly. That’s why most full-auto blasters come with large magazines or hoppers.
Capacity makes a huge difference. The Prometheus holds 200 High-Impact rounds, which is almost necessary when firing eight rounds a second. The Nemesis, with a 100-round capacity, can still keep you blasting for close to a minute before reloading.
Batteries
The main trade-off with full-auto blasters is that they rely on batteries, and lots of them. Always check the type and number required, and invest in high-quality batteries for longer play.
Some models, like the Prometheus, come with a rechargeable pack that’s lighter and far more efficient than standard batteries.
What About Semi-Auto?
Semi-automatic Nerf blasters are different. They fire one dart per trigger pull, rather than continuous streams.
Some blasters even offer both modes. For instance, the Nerf Pro Gelfire Mythic has a select-fire feature, letting you switch between semi-auto and full-auto depending on the battle.
Top 7 Full-Auto Nerf Blasters
Let’s take a closer look at my seven favorite Nerf machine guns.
1. Nerf Rival Nemesis MXVII-10K
The Rival Nemesis kicks off this list and easily claims the top spot among fully automatic Nerf blasters. First released in 2017, it was a game-changer. With high performance, a massive ammo capacity, and great ergonomics, it quickly became a fan favorite.
One excellent feature is its hopper system, which replaces the standard magazine. You simply pour in Rival High-Impact Rounds, and the hopper feeds them smoothly to the front of the blaster, ready to fire. It is quick, convenient, and perfect for long battles.
Using the Nemesis is an experience in itself. It feels comfortable to hold, handles beautifully, and with its large capacity and consistent firepower, it is still my pick for the best full-auto Nerf gun available today.
| Nerf Rival Nemesis MXVII-10K | |
|---|---|
| Year: | 2017 |
| Series: | Rival |
| Ammunition: | High-Impact Rounds |
| Firing capacity: | 100 |
| Batteries: | 6 D-batteries |
| More info: | Nerf Rival Nemesis review |
2. Nerf Rival Prometheus MXVIII-20K
The Prometheus is a Rival blaster that pushes the limits of performance and fun. It is powerful, over-the-top, and not for everyone, but it easily outshines most other Nerf blasters.
Like the Nemesis, the Prometheus uses a hopper-style magazine that is both convenient and efficient. Where it really stands out is capacity. With room for 200 High-Impact Rounds, it leaves the Nemesis behind in sheer firepower.
Performance is just as impressive. The Prometheus can fire up to eight rounds per second, which is nothing short of incredible.
This blaster is designed to be held with both arms at the hip, which may seem awkward at first. In practice, it is more comfortable than expected, and since the Prometheus is not overly heavy, it is surprisingly easy to handle.
| Nerf Rival Prometheus MXVIII-20K | |
|---|---|
| Year: | 2018 |
| Series: | Rival |
| Ammunition: | High-Impact Rounds |
| Firing capacity: | 200 |
| Batteries: | Rechargeable battery |
| More info: | Nerf Rival Prometheus review |
3. Nerf Ultra Select
The Nerf Ultra Select is one of the stronger performers in the Ultra Series. It is a fully automatic, flywheel-powered, magazine-fed blaster that stands out despite the Ultra range not being the most successful overall.
This blaster fires Ultra darts and comes with 10 standard Ultra darts plus 10 AccuStrike Ultra darts. The AccuStrike versions are designed for better accuracy compared to the originals. In terms of performance, the Ultra Select offers decent firing velocity and range, though it is not exceptional.
Its biggest drawback is capacity. Each magazine holds only 10 darts, which feels limited when compared to blasters like the Nemesis and Prometheus. On the plus side, the Ultra Select includes two magazines, and both can be attached to the blaster at the same time. Reloading and switching between them is quick and straightforward, which helps make up for the smaller capacity.
| Nerf Ultra Select | |
|---|---|
| Year: | 2021 |
| Series: | Ultra |
| Ammunition: | Ultra Darts |
| Firing capacity: | 10 |
| Batteries: | 6 C-batteries |
4. Nerf N-Strike Mega Mastodon
The Nerf N-Strike Mega Mastodon is a fully automatic, flywheel-powered blaster with a built-in drum that holds 24 darts. It is one of the largest Nerf guns ever produced, and its size alone makes it a standout piece for any collection.
The Mastodon runs on six D batteries, which add noticeable weight, but they power a blaster that is both fun and reliable. Its 24-dart capacity is solid, even if it falls short of some of the Rival blasters. In terms of performance, it remains one of the best in the Mega series and delivers a satisfying experience.
The Mastodon is designed to be held at the hip using the top handle, which adds to its unique style and makes blasting even more enjoyable. With its power, presence, and playability, it continues to be a fan favorite.
| Nerf N-Strike Mega Mastodon | |
|---|---|
| Year: | 2016 |
| Series: | Mega |
| Ammunition: | Mega Darts |
| Firing capacity: | 24 |
| Batteries: | 6 D-batteries |
5. Nerf Rival Perses MXIX-5000
The Rival Perses is a compact flywheel and conveyor blaster with a hopper that holds 50 High-Impact Rounds. The hopper system works efficiently and rarely causes jams, making it a reliable option for fast-paced battles.
What sets the Perses apart is its design. It is smaller, lighter, and more comfortable to handle than bulkier Rival blasters like the Nemesis or Prometheus. Despite its compact size, it delivers excellent performance with a smooth and powerful firing mechanism.
The Perses features a primary trigger, a trigger lock, and an acceleration trigger, giving it solid control and a strong rate of fire. Combined with its hopper system, it offers both speed and consistency.
For Nerf fans who want a high-performing, fully automatic blaster without the extra bulk, the Perses is an outstanding choice.
| Nerf Rival Perses MXIX-5000 | |
|---|---|
| Year: | 2019 |
| Series: | Rival |
| Ammunition: | High-Impact Rounds |
| Firing capacity: | 50 |
| Batteries: | Rechargeable battery |
| More info: | Nerf Rival Perses review |
6. Nerf Hyper Mach-100
The Nerf Hyper Mach-100 was a tough call for this list, but it earns its place as one of the better options in the Hyper series. While the Hyper range has had a mixed reception, the Mach-100 stands out as a solid performer.
Like the Rival line, Hyper blasters use rounds instead of darts, but Hyper rounds are much smaller. They also tend to be less accurate than Rival rounds. The Mach-100 is essentially the Hyper version of the Rival Perses, though it does not match the Perses in overall performance. It is, however, a bit more kid-friendly.
The Mach-100 features an integrated hopper with a capacity of 100 rounds, giving it strong staying power in battle. It may not be the most ergonomic blaster to use, but it offers plenty of fast-paced fun and remains one of the highlights of the Hyper series.
| Nerf Hyper Mach-100 | |
|---|---|
| Year: | 2021 |
| Series: | Hyper |
| Ammunition: | Hyper Rounds |
| Firing capacity: | 100 |
| Batteries: | 6 D-batteries |
7. Nerf N-Strike Modulus Regulator
The Nerf N-Strike Modulus Regulator is unique because it functions as both a semi-automatic and a fully automatic blaster. Its select-fire feature lets you switch between semi-auto, full-auto, and even three-round bursts, which adds a level of versatility not often seen in Nerf blasters.
What also sets the Regulator apart is its focus on customization. Like the rest of the Modulus series, it is designed to be modified and upgraded with a wide range of attachments.
Out of the box, the Regulator includes a storage stock, two barrel scopes, two 12-dart clips, and 24 Modulus Elite darts. With its flexible firing modes and extensive customization options, it is a great choice for players who enjoy experimenting with different setups.
| Nerf N-Strike Modulus Regulator | |
|---|---|
| Year: | 2017 |
| Series: | N-Strike Modulus |
| Ammunition: | Elite Darts |
| Firing capacity: | 12 |
| Batteries: | 4 C-batteries |
And there you have it, my picks for the seven best fully automatic Nerf guns you can buy right now.
Yes, the top two spots go to Nerf Rival blasters, and I know not everyone will agree. But in terms of performance, capacity, and sheer fun, the Nemesis and Prometheus still stand out as the best of the bunch.
Of course, lists like these are always a bit subjective, and every Nerf fan has their own favorites. If you think another blaster deserves a place here, let me know. I’d love to hear your thoughts and might even update the list.
Last updated: September 29, 2025
Hi Thomas,
While I agree that these seven Nerf blasters are good, I genuinely believe leaving the Regulator out of this list is criminal.
Honestly, the Nemesis, Perses, and Prometheus do the exact same thing. Only difference is capacity. The truth is the Nemesis was eclipsed by the Prometheus by its capacity and rechargeable battery being included. You need to mod it to get it to perform at its peak. The Modulus Regulator did a couple of things differently, including select fire and a belt pusher for a dart blaster. IMHO, you could have omitted the Prometheus and replaced it with the Regulator.
Hi Santiago, all valid points.
When I first wrote this article, the Regulator was actually on my reserve list. It’s a fantastic machine, and that select-fire feature is indeed very clever. It does have its flaws though, but yeah, overall, it’s a great blaster.
However, I’m biased toward Rival, and I really do like the Prometheus for what it is; a fun, well-performing machine with a ridiculous stock capacity. That said, I do agree that the Regulator deserves a mention, and I may change my mind and include it in the list next year.
Thanks for commenting, Santiago!
Ultra Speed.
Yes, the Speed is a great blaster, but I think the Ultra Select is better.
Die Nerf Ultra Select ist nur halbautomatisch.
No, it’s a fully automatic blaster.
Is the nerf ultra 2 full auto?
Hi Korbyn, the Ultra 2 is a semi-auto blaster, and the Ultra Select is a full auto.
Hi Thomas,
I did a quick Google search on Best Nerfs and I landed here! I appreciate your clear and concise opinions on the Nerfs! It did not take me long to decide on my 1 of 2 Nerfs needed for Christmas; Nerf Rival Nemesis MXVII-10K. My kid will think I am the coolest on Christmas Day :).
I saw your response to a comment on the Regulator so I am now torn between Regulator vs Prometheus. Please write and give feedback on the Regulator pros/cons.
Hi Marcy,
If you’ve already decided on the Nemesis (good choice!), it might be a good idea to purchase the Regulator instead of the Prometheus as the second blaster. I do prefer the Prometheus, but if you already have a Rival blaster, maybe a blaster in the N-Strike Modulus series will add a bit of variety. The Regulator is great, and the three firing modes feature is quite fun.
The Regulator is also cheaper than the Prometheus, if that’s something to consider. Either way, both blasters are a lot of fun, and I’m sure your kid will appreciate both!