What's up with this thing?

[ManInBlack]

Can't say I've ever seen one of these before...

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230347582958&ssPageName=ADME:B:SS:US:1123

[shives007]

These came out a went away rather quickly. The issue was how to chrono it. If you change the openings, you change the velocity. If you set it so your top velocity is legal, why would you want to turn it down. If you set it so your low velocity is legal, any adjustment would make it illegal. It would be a novelty piece.

Shives

[Ratzo]

Those were a novel aproach to a barrel kit, no inserts to mess with.

[chafnerjr]

Those were a novel aproach to a barrel kit, no inserts to mess with.
If you don't mind my asking... how would this replace inserts? This does nothing to change the size of the bore... right?

[Drix]

I think rat thinks it was an aradus(sp?) which was a barrel that had a twist back that changed the bore size. I've never seen one of those and I agree, whats the point?