This is a good idea..no sense, cutting another one..
If you want, i have a few sporter no1 barrles. I could cut one to 20" and turn the end down to 14.5mm so you can install a factory no1 front sight. I just did this 2 weeks ago. You ship the barrel to me when i get trcking id ship the sporter barrel to you.... just an option. Or i could dril and tap and install a ramp.. in the hunting and sporting arms section you can see pics of what im talking about in a thread called " my LE (32 carbine) squrrel gun" it may be on the second page now.