what type of barrel is this

[randel]

i picked this up off of ebay and dont know what type of barrel it is its 12in and only has one nubbin. it came with a wire nubbin but i took it out. can anyone help. :(

http://i113.photobucket.com/albums/n217/bobrob212/IMG_1630.jpg

http://i113.photobucket.com/albums/n217/bobrob212/IMG_1632.jpg

http://i113.photobucket.com/albums/n217/bobrob212/IMG_1631.jpg

[Spider-TW]

Is it plated brass or copper?

[flyingpootang]

It's a J&J hard chrome barrel early 90's. Dose it have the 4 straight land groves down the barrel?

[randel]

yes it has 4 grooves down it are these good

[flyingpootang]

Well their supposed to be more accurate then non grooved barrels, but never was proven. If it was then J&J would still make them....