Tacsol barrel fitting issue

[SPACEFORCE]

Ok so long story short...

Purchased a TD Tacsol barrel (Its easy to fit they say) attempting to fit into a Ruger TD receiver but its not fitting.
E-mailed Tacsol they say they make their TD parts a touch bigger and to sand and oil and they sent a YT video to watch.
BUT the part that doesnt fit is the Square flat sided section and I'm wondering if thats safe to sand as its a large area?
I'm reading its the "shank" but I'm not sure which part is the shank just the barrel length of the whole TD area?
Anyone have experience adding a TD Tacsol barrel?
Thanks

 

[rifleman338]

The shank should just be the smaller chamber section that slips in the receiver. Some emory cloth, oil and elbow grease and keep checking for a snug fit.

 

[ert]

Did you try freezing the barrel and heating the receiver? A heat gun (used cautiously) or a hair dryer in combination with a well frozen barrel usually makes for a pretty quick fit.