Rifle Choke tube for my M4? does it exist?

[Alaskapopo]

I would not mind picking up a rifled choke tube for my new M4. I primarily shoot slugs through this gun. Is there such an animal and where can i get it?

Thanks

Pat

[HOGWILD]

http://www.brownells.com/aspx/ns/store/ProductDetail.aspx?p=8005&title=RIFLED+CHOKE+TUBE never used one but read an article about certain slugs that did not do well with rifled chokes? i am sure there are others that have no issues!

[Alaskapopo]

Thanks I ordered one.

Pat