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 Nerf Rival Rounds*, Compatible with All Nerf Blasters

Product ID: 400914964

Details

Brand
Nerf
Size
Standard
Color
Blue
Model Name
RIVAL 50 ROUND
Sport
Airsoft

🎯Most accurate rounds

🔵50 precision Accu-Rounds

⚙️Aerodynamic dimple design

$106

Duties & taxes included

In stock

Sold byAmazon FijiDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎯 Lock, load, and dominate with the sharpest shots in the game!

BULK UP YOUR ARSENAL - Includes 50 high-performance Accu-Rounds to keep you battle-ready.
UNIVERSAL COMPATIBILITY - Works seamlessly with all Nerf Rival blasters for ultimate versatility.
BATTLE TESTED RELIABILITY - Trusted by thousands with a 4.8-star rating—don’t get caught understocked.
PINPOINT PRECISION EVERY SHOT - Enhanced aerodynamic design and dimple pattern for unmatched flight consistency.
PART OF THE ULTIMATE ACCURACY SYSTEM - Pairs perfectly with adjustable sights and optimized barrels for pro-level targeting.

The Nerf Rival 50 Accu-Round Refill pack delivers 50 of the most accurate Nerf Rival rounds featuring an advanced aerodynamic design and dimple pattern for consistent flight. Compatible with all Nerf Rival blasters, these rounds are engineered to enhance your blaster’s precision and performance, making them a must-have for serious Nerf enthusiasts aged 14 and up.

Specifications

ASIN	B09NHVSL52
Age Range Description	14 YEARS+
Best Sellers Rank	#18,645 in Toys & Games ( See Top 100 in Toys & Games ) #17 in Toy Foam Ammunition
Brand Name	Nerf
Color	Blue
Customer Reviews	4.8 4.8 out of 5 stars (993)
Global Trade Identification Number	00195166170343
Included Components	50 rounds.
Item Dimensions	1.5 x 4.69 x 10.5 inches
Item Dimensions L x W x H	4.69"L x 1.5"W x 10.5"H
Item Type Name	Toy Blaster
Item Weight	0.1 kg
Manufacturer	Hasbro
Manufacturer Maximum Age (MONTHS)	1188
Manufacturer Minimum Age (MONTHS)	168
Manufacturer Part Number	F5051
Material Type	Plastic
Model Number	F5051
Number of Items	1
Occasion	Birthday
Size	Standard
Style	Pistol
Sub Brand	Nerf
Target Audience	Unisex-Kid
Theme	Fantasy
Toy Gun Type	Blaster Toy Gun
UPC	195166170336

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