So I was thinking today, the aluminium tube that the multi-vatimin tablets "Berocca" come in actually looks around the same size as the Nerf Recon plunger chamber. If it is then this would be good because it makes a cheap easy alternative to buying a metal internals.
The only problem is I don't have a Recon and can't find the circumference for the plunger chamber so if somebody would be ever so kind and post it for me I could look at making a potential metal internal piece.
Oh by the way the circumference for the Berocca tube is 7.5cm give or take.