Are these compatible w/ Nerf Helios?

I don't have a Helios to test, but they are compatible with every blaster that uses Rival rounds that I own.

Are these rounds worth purchasing for a Prometheus? Idk if I should buy 200+ of these rounds if the performance boost is marginal at best

These accuRival rounds have a rubber-like coating on them are much more durable than standard rival. They also have less drop over distances and less curve due to being slightly smaller and having slightly less wind resistance due to the coating. Fps is a tiny bit less than standard rival. They tend to fly farther not straighter. When I ran these through my heavily modified Prometheus I was hitting 120 fps and 10 rounds per second. Almost identical to standard rival. Hope this helps!

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NERF Rival 50 Accu-Round Refill, Includes 50 Accu-Rounds, The Most Accurate Rival Rounds, Compatible with All Rival Blasters

NERF Rival 50 Accu-Round Refill, Includes 50 Accu-Rounds, The Most Accurate Rival Rounds, Compatible with All Rival Blasters

Product ID: 412544183

Details

Brand
Nerf
Size
Standard
Colour
Blue
Model name
Rival 50 Round
Sport
Airsoft

🎯Most accurate rounds

🔵50 high-performance Accu-Rounds

⚙️Aerodynamic dimple design

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€ 96.70

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Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎯 Lock, load, and dominate with precision-packed power!

BULK UP YOUR ARSENAL - Includes 50 Accu-Rounds to keep you battle-ready and ahead of the competition.
BATTLE TESTED RELIABILITY - Trusted by thousands with a 4.8-star rating—because winning is non-negotiable.
PINPOINT PRECISION EVERY SHOT - Enhanced aerodynamic design and dimple pattern for unmatched flight consistency.
UNIVERSAL RIVAL COMPATIBILITY - Works seamlessly with all Nerf Rival blasters for ultimate versatility.
ENGINEERED FOR ELITE PERFORMANCE - Part of the most accurate Nerf Rival system featuring optimized barrels and adjustable sights.

The Nerf Rival 50 Accu-Round Refill pack delivers 50 precision-engineered rounds featuring an aerodynamic dimple design for consistent, accurate flight. Compatible with all Nerf Rival blasters, these rounds are part of the most accurate Nerf Rival system, designed to elevate your gameplay with optimized barrels and adjustable sights. Perfect for players aged 14 and up, this refill pack ensures you stay battle-ready with trusted performance and a top-rated user experience.

Specifications

ASIN	B09NHVSL52
Age Range Description	14 YEARS+
Are Batteries Required	No
Brand Name	Nerf
Colour	Blue
Customer Reviews	4.8 4.8 out of 5 stars (953)
Included Components	50 rounds.
Is Assembly Required	No
Item Dimensions	38 x 119 x 267 millimetres
Item Dimensions L x W x H	11.9L x 3.8W x 26.7H centimetres
Item Type Name	Toy Blaster
Item Weight	0.1 Kilograms
Manufacturer	Nerf
Manufacturer Part Number	F5051
Material Type	Plastic
Maximum Age Recommendation	1188
Minimum Age Recommendation	168
Model Number	F5051
Number of Items	50
Occasion	Birthday
Operation Mode	Manual
Power Source	Manual
Size	Standard
Style	Classic
Sub Brand	Nerf
Target Audience	Children aged 8 and up
Theme	Fantasy
Toy Gun Type	Blaster Toy Gun
UPC	195166170336

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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