Re: TRG22 question
I can try to help, but someone may know more. The green phosphate model, has all eye sling attachments, a milled slot on barrel for front sight, and the stock material may be different than the blued model.
The stock subject is in debate. A search on the subject may be needed to draw you own conclusions.
Blued model, no eye sling attachments, barrel is blued with no mill slot for front sight.
Other than that, I dont know of anything else. I have the two models, blued and phosphate, and that was the difference I had with them.
I have not followed the prices lately with the models, and with new colors and camo on stocks, this may have a price difference also.