Nerf Sharpfire Mod - The Easiest Brass Breech Ever! | Walcom S7 - YouTube
SharpFire | Nerf Wiki | Fandom
I didn't expect to like these so much but they're quickly becoming my new favourites. Quick and super easy to mod with room for two springs they pack a real punch. :
Amazon.com: Nerf Sharpfire : Toys & Games
Blastermod Upgrade 4.5 KG/7KG/9KG/12KG Spring Coil for Nerf N-Strike SharpFire Blaster Toy