OOD K25 2.0 x 280mm Spring with Squared Ends

Insane power upgrade for any blaster that can take 280mm springs like this. I tried this spring combined with a Worker 1.8x270 spring in my Kunlun and with the stock barrel, it was averaging around 295 FPS with Sabre 1.3g t-darts. Dart Zone 1g bamboos were hitting around 335-345 FPS with the same setup. However, I'd strongly recommend upgrading your plunger rod and catch plate to the hardened steel version from Worker because of how hard this spring shoots.

Perfect for the purpose

Bought this for my Caliburn C4. Wanted to dial it in a bit more with the Shearforce BCAR I’m using. It definitely helped!

My shop would fail without K25 springs

I've been buying about 300 of these a year and they're the best spring for high FPS half dart hobby blasters. Can we get another bulk tier at 100 springs ordered?