Where to mount optic on Ruger PC9 MLOK

[climbingrocks]

Anyone have any issues losing zero by mounting their optic on the receiver rather than on the handguard of their Ruger PC9 MLOK model? I always takedown the carbine for transport.

I am running a Romeo5 on the handguard and it's fine, but I was thinking about moving the optic to the receiver in the hopes of making this front-heavy beast a little more balanced. I have yet to shoot at anything beyond 25 yards - am I likely to see any change in point of impact?

Thanks!

 

[Jay]

I mounted my Romeo5 over the ejection port on the receiver of my Ruger PCC.

If your barrel is tight to the receiver, I can't see using the take down feature affecting it's zero upon reassembly.

To check if it's tight, stand the rifle up & holding the receiver gently wiggle the barrel. If there is any play, disassemble & adjust the barrel nut 1 click and reassemble. Check for wiggle... Once tight I can't see loss of zero being an issue.

Cheers
Jay

 

[Scotty454]

Your POI will shift a tiny bit if it's adjusted properly like Jay said, but it shouldn't be noticeable, especially with a red dot. You're not shooting 1/4 MOA groups with a takedown PCC.

 

[climbingrocks]

Thank you gentlemen, I'll move my optic and report back if I have any issues.

 

[alpining]

It's not clear, but maybe you're asking if your POI will shift by moving the optic from the handguard to the receiver. I think you will have to re-zero, if that's what you're asking.

 

[Scotty454]

It's not clear, but maybe you're asking if your POI will shift by moving the optic from the handguard to the receiver. I think you will have to re-zero, if that's what you're asking.

He's asking if the POI will shift by removing and re-installing the barrel with the optic mounted to the receiver (vs mounted to the barrel itself).

 

[Horilka]

There are two things here. First, I dont find POI shift being the case after taking down and putting barrel back, that is for CQB distance targets. I find another factor being at fault. When you support the carbine by grabbing its handguard or rest handguard on something - POI will shift. This is price you pay for TD feature. Tighten the knob as much as you can while you still able to take down the barrel and POI shift will be minimal. Or, move optics to the handguard and have worse balance and weird look. Or, support your carbine in the magwell area. Pick your own poison.
And when ppl say "hey, it's just a plinking gun", remind them that there are those weird nutz around who compete with their guns, and in competition there are no such thing as insignificant degradation of accuracy, any degradation drags you down the list.

 

[Scotty454]

There are two things here. First, I dont find POI shift being the case after taking down and putting barrel back, that is for CQB distance targets. I find another factor being at fault. When you support the carbine by grabbing its handguard or rest handguard on something - POI will shift. This is price you pay for TD feature. Tighten the knob as much as you can while you still able to take down the barrel and POI shift will be minimal. Or, move optics to the handguard and have worse balance and weird look. Or, support your carbine in the magwell area. Pick your own poison.
And when ppl say "hey, it's just a plinking gun", remind them that there are those weird nutz around who compete with their guns, and in competition there are no such thing as insignificant degradation of accuracy, any degradation drags you down the list.

This is a great point. POI shift from putting pressure on the barrel/handguard is probably going to cause you WAY more problems than the removal/reinstallation of the barrel.

In a 3-gun competition, typically the times you're going to prop on something is when you need an extra bit of stability to hit a smaller target (Like a clay at a distance or something). Your POI shifting way up or to the side when you need consistency the most is definitely not ideal. Something to think about for sure.