SIG ROMEO X

[HeavyDuty]

I wouldn’t bet against that!

I’m sure Sig will sell a new slide kit for $600 too

Bummer. Aaron got right back to me to say they wouldn’t be able to do the counterbored holes from the underside, they can only work top down. I suspect it could be resolved with fixturing using the cut as the index, but it may not be worth the effort for them.

[RJ]

Not my pictures:




The conclusion I reached in that thread was that for a K series going onto a Fuse slide, you'd need to omit the silver inserts, and install it direct, with just the screws. Which as far as I can remember is how a K series goes on to a P365 slide anyway, so I'm not sure it's a yuge deal.

[TAZ]

Can’t you still mount a Holosun direct on a Fuse? I think it is still backwards compatible.

The video isn’t very clear, but I saw nothing that looked like 2 threaded holes in the slide. Could have missed them, but all I see is the thru holes for the new optic. Unless they mount this optics with small enough screws to pass through the threaded holes for a Holosun… or have some T nuts that fit from the underside like the CHWPS plates.


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[Noah]

The video isn’t very clear, but I saw nothing that looked like 2 threaded holes in the slide. Could have missed them, but all I see is the thru holes for the new optic. Unless they mount this optics with small enough screws to pass through the threaded holes for a Holosun… or have some T nuts that fit from the underside like the CHWPS plates.


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The question that answers this question is whether the video is about the existing P365 Fuse slide, which has threaded holes.

[crosseyedshooter]

The video isn’t very clear, but I saw nothing that looked like 2 threaded holes in the slide. Could have missed them, but all I see is the thru holes for the new optic. Unless they mount this optics with small enough screws to pass through the threaded holes for a Holosun… or have some T nuts that fit from the underside like the CHWPS plates.

The SIG-LOC footprint on all of the Fuse slides moved up to M4 screw holes in the slide so they could theoretically be used as through holes for M3 screws from the bottom.

As interesting as it is, I’d still like to understand what benefits these have over the K footprint besides lots of marketing for a proprietary footprint. I mean, are the current focal length optics and two-screw points of contact a problem?

[TAZ]

I’m also not really sure what the point is aside from possibly locking the 365 family into a Sig optic moving forward, which IMO is a bad move.

From what I remember the Holosuns mount using M3 screws that thread into the slide. If the X mounts using M4 threaded fasteners then these holes are useless for the Holosun. M4 clearance hole is 4.3-4.8 mm. There would need to be other holes or an insert from the underside.


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[crosseyedshooter]

I’m also not really sure what the point is aside from possibly locking the 365 family into a Sig optic moving forward, which IMO is a bad move.

From what I remember the Holosuns mount using M3 screws that thread into the slide. If the X mounts using M4 threaded fasteners then these holes are useless for the Holosun. M4 clearance hole is 4.3-4.8 mm. There would need to be other holes or an insert from the underside.

I don't have one, but I've read that the FUSE comes with the needed M4 screws. It's backwards compatible with Holosun K footprint. The current P365 slides have M3 threaded bosses, so the optic holes are large enough to allow for the diameter of the threaded bosses. The FUSE doesn't have the threaded bosses and uses the larger diameter M4 screw instead. It's six of one and half dozen of the other as far as the holes in the optic are concerned.

ETA: Just to be clear, legacy optics would use M4 flathead screws mounted from the top. The new SIG-LOC optics would use M3(?) cap screws mounted from the bottom.

From another site:


SIG marketing can't say that previous P365 mounting footprint with just the M3 screws and no recoil lugs is inadequate and there haven't been any reports of issues on any major forums that I've seen.

[EzGoingKev]

Never mind.

[TAZ]

I don't have one, but I've read that the FUSE comes with the needed M4 screws. It's backwards compatible with Holosun K footprint. The current P365 slides have M3 threaded bosses, so the optic holes are large enough to allow for the diameter of the threaded bosses. The FUSE doesn't have the threaded bosses and uses the larger diameter M4 screw instead. It's six of one and half dozen of the other as far as the holes in the optic are concerned.

ETA: Just to be clear, legacy optics would use M4 flathead screws mounted from the top. The new SIG-LOC optics would use M3(?) cap screws mounted from the bottom.

From another site:


SIG marketing can't say that previous P365 mounting footprint with just the M3 screws and no recoil lugs is inadequate and there haven't been any reports of issues on any major forums that I've seen.

Thanks for digging that up!!


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[cornstalker]

Recent reviews for the Romeo X Enclosed on Amazon are not encouraging. Any one here having initial quality issues? The reviews posted on an ad for an X Enclosed. I guess it’s possible it may pertain to other models.