Under Barrel Picatiny Rail for Ruger MkIII

**MMH** · June 5th, 2020, 08:01 PM

I am trying to find a picatiny rail that I can mount on the underside of my barrel of my Ruger MkIII pistol so that I can mount a laser light while still being able to use my iron sights. It has a 5.5" bull barrel (0.875" OD). I thought that I would find a million of these out there but have had no luck.

**TDIfan** · June 6th, 2020, 05:54 PM

I like the idea. Surprising nothing like this is available.

**Tacgunner** · June 6th, 2020, 06:02 PM

Performance Services LLC in Texas makes bolt on pic rail for your lights.

**hunterdan** · June 6th, 2020, 08:15 PM

Originally Posted by MMH

I am trying to find a picatiny rail that I can mount on the underside of my barrel of my Ruger MkIII pistol so that I can mount a laser light while still being able to use my iron sights. It has a 5.5" bull barrel (0.875" OD). I thought that I would find a million of these out there but have had no luck.

Are your drilled and tapped for a rail?

**marinville** · June 6th, 2020, 08:27 PM

I'm pretty sure theres a 'tactical' version of this pistol which includes an under barrel rail for light/laser. I'm not sure how you expect to mount something if your pistol isn't drilled and tapped for such a mount.

**hunterdan** · June 7th, 2020, 06:04 PM

Originally Posted by marinville

I'm pretty sure theres a 'tactical' version of this pistol which includes an under barrel rail for light/laser. I'm not sure how you expect to mount something if your pistol isn't drilled and tapped for such a mount.

I just bought a mkiv tactical and it has the under barrel rail. It personally does me no good, but was curious if he was drilled and tapped if it had the same screw spacing.

**MMH** · June 15th, 2020, 01:14 PM

Originally Posted by hunterdan

Are your drilled and tapped for a rail?

Yes, but do not want to mount a laser on top as I wan to be able to use the iron sights.

**MMH** · June 15th, 2020, 01:15 PM

Originally Posted by marinville

I'm pretty sure theres a 'tactical' version of this pistol which includes an under barrel rail for light/laser. I'm not sure how you expect to mount something if your pistol isn't drilled and tapped for such a mount.

Drilling & tapping is not that hard.

**MMH** · June 15th, 2020, 01:23 PM

Originally Posted by Tacgunner

Performance Services LLC in Texas makes bolt on pic rail for your lights.

Thanks - I checked that out. Not what I expected but would work. It is a short picatiny integrated w/ a 0.875" dia. scope ring. $60 w/ shipping.

May have to make my own - start w/ a thick picatinny rail and mill out a 0.4375" radius on the underside to fit the barrel profile.