Anyone fitted and R-Hop to a KM TN Barrel?

[webbjay]

Bought an R-Hop and want to fit it to a KM TN barrel. However the hop window on the barrel is a funny shape. Has anyone fitted an R-Hop to a KM barrel. I am thinking I will have to file the hop window on the barrel to accommodate the R-Hop.

Cheers!

[happyal]

Re: Anyone fitted and R-Hop to a KM TN Barrel?

I'm not sure what a KM barrel is, can you post a pic?

[sj_asc]

Re: Anyone fitted and R-Hop to a KM TN Barrel?

KM (Head 1950) TN (Teflon Nickel lined) Inner Barrels (6.04mm), they were one of the first tightbore makers.
In response to the original question, yes due to the nature of R/G hop mods the opening window will need to be lengthened, the one on the KM barrels is particularly small and will need to be significantly lengthened so the R/G hop can have the extended surface contact as intended in the design.

[webbjay]

Re: Anyone fitted and R-Hop to a KM TN Barrel?

Thanks for the replies guys. Here is the barrel:


As you can see the window is angled on the right hand side and I will, as sniperjesus confirmed, have to file that down to create a larger window for the R-hop.