(Crossposted at MCB, SCP, PhOG, and PBC)
I was talking with a teammate today and he mentioned that he had been prototyping some spring kits for the Sterling. He mentioned if anyone is interested to contact Madman Products and talk with Rusty Brown about them to show interest in the kit.
Rusty's contact info:
31463 W 153rd St
Excelsior Springs, MO 64024
Email email@example.com www.maddmanproducts.com
My teammate also mentioned something about 400 psi, 272 fps +/- 2fps, the spring kit, Sterling high flow rate valve, all in a drop in kit for Sterlings that he personally is working on. Stay tuned!