Type 81 LMG Bipod takeoff

Type 81 LMG Bipod,  new takeoff, no rust or dents but a scrape down the inside, nothing crazy… just how it came, works great, I suspect it would fit on the new type 81m series rifle barrels as they look to be same thickness $80 shipped as shipping will cost me $27 for a tracked flare rate box able to fit these… there not huge but not small. 
 

I included a photo of the scratch on the side of one leg just so you can see it, like I said minor…