Nerf enthusiasts, this WORKER 7KG upgrade spring is exactly what you need to take your Rampage blaster to the next level! Compatible specifically with the Nerf Rampage blaster, this stainless steel spring is designed to significantly boost your shooting performance. The 7KG spring weight provides that perfect balance of increased power without being too difficult to prime. You'll notice a real difference in both shooting range and dart velocity - we're talking about sending darts farther and faster than the stock spring allows. The silver stainless steel construction ensures durability and consistent performance shot after shot. Now, a quick heads-up - this is just the spring set itself, you'll need to install it into your existing Rampage blaster. The installation does require some technical skill since you'll be opening up your blaster and replacing the factory spring. Make sure to work carefully and follow online tutorials to avoid damaging your toy. All parts come separately packaged, and at 72 grams with package dimensions of 120×100×35mm, it's a compact upgrade that delivers big results. Just remember - the Rampage blaster itself is not included, so you'll need to already own one. Whether you're into Nerf wars, target practice, or just want to maximize your blaster's potential, this upgrade spring is one of the most effective and affordable ways to enhance your Nerf experience. The quality is noticeably better than stock springs, and the performance improvement is immediately apparent when you start firing. It's definitely a game-changer for serious Nerf modders and casual players alike who want that extra edge in their foam flinging adventures!