Board Thread:General Nerf discussion/@comment-35070608-20200630094644/@comment-27306930-20200630201554

Yes, use the 5kg spring. Use the whole kit, including the catch spring. And lube the heck out of it. There's plenty in the container to do the tube, and the bolt sled.

You can use the left over stock EAT spring to double up one of your other blasters.