552 assembly help

[lucky guy]

I brought home a used 552 yesterday.  Shoots great and I thought I'd give it a thorough cleaning last night.  Barrel comes out easy enough, but sure doesn't go back easily.  Anybody got any tips or instruction for reassembly?

Thanks.

[JD]

Should slide right in.
Make sure the bolt is inserted correctly in the barrel, the charging lever is inserted all the way into its notch, and the feed tube is positioned and it should slide right back into the receiver.
 JD

PS I always found that putting the trigger group in last helped