New L1A1 Sporter help CIA or Hesse

Hello All,
This is a great place what a resource for the collector. I am wondering if I could get some help with a rifle I found at a shop yesterday. It is an Century Arms Int. St. Albans made in Canada upper L1A1 Sporter it appears to be an older import. I had 3 to pick from this one is has a long barrel with a 3 groove flash hider/bayo lug. The serial # on the lower is UB 60 A79764, trigger b60, behind the trigger guard is 960-0071- charging handle is a 960-23C2- electro pencil on bottom of bolt is UB A49785- on the bolt itself is UE A 44982 it has plastic furniture and a trilux L2A2 Scope
turns red with the turn of a brass screw I have read that they where convert. to Led I am assuming this one has. I had the choice of this or a Hesse upper part gun any info. on quality issues or if this is a good one. Any info. appreciated

Stay away from the Hesse. Another good resource is the falfiles