I've recently seen Aeromech's sear carbine video and I thought to myself: "Can this be easy enough to get me in to homemades?". The PVC and cuttingboard work is doable for me. I've got a nice amount of tools, but I lack springs.
I live in Europe so I don't have acces to Mcmaster, and I don't want to spend $50 on shipping for a pack of 3 springs bought of Nerfhaven. So I wondered if I could use a normal elite/longshot upgrade spring to power my sear carbine. Any ideas?