If you have the file to print it, and the licensing allows for it, then there’s a bunch of us that can print it.
I typically print things for cost so that Airsofters can get what they want for their airsoft guns. Others do it as an actual business and charge different prices.
if you need the design work doing, that’s were it gets expensive. If it’s something simple like a supressor or a small part, some people can CAD it for a small cost but something like a rail is quite labour intensive and may not be cost effective.
Jez said “for £53 buy that one”. I think he’s right. The SRU pre-made one will likely
be cheaper and better quality than getting some random bloke off the forums to print you one.