1827 front sight threads

[Shooterer]

I have a older (1991) 1827 Biathlon with a 1 piece front sight. Does anyone know the thread size for the "Clamp Ring" that hold in the insert in place?

I have been using this rifle in the summer to shoot small-bore silhouette leagues (what a hoot), I am looking to fabricate a Eagle Eye type of aperture. I currently have one taped on the back of the sight so I can see those stupidly small targets.

It is smaller than M18, none of my Anschutz, Centra or Gerham filters/lens will fit. My small-bore rifles M18 disk inserts fit in place of the steel insert, but nothing will thread on.

[Shooterer]

OK, how about this.
Does anyone know of a machinist or gunsmith that I could send my front sight to and they would drill and tread the back to accept a standard 18mm lens?

[pcw]

Hey Shooterer,

I tried to see if the retaining ring for my air rifle would thread into the 1827 I have (which is the same generation as yours). The ring fit, but wouldn't thread because the threads on the biathlon rifle were finer than those on the air rifle.

[spektr]

Nordic Marksman has the parts on their website

[Shooterer]

Thanks for the replies

I am not looking for the Clamp Ring, I was looking for information on what the thread size was. Now I am going to go the modified sight route.

[pcw]

You might give Altiusguns a shout, I'm sure Mark could tell you the thread size and what would work for an eagle eye.