Holosun 507c on Sig X-TEN

[thomis]

I had my Holosun 507c mounted on my FNX 45 and it did just fine at keeping zero. I recently switched it to my Sig X-TEN (10 mm if you're not familiar) and my shots are walking right. All mounting plate and sight screws are blue loctited and sat overnight before I even attempted to shoot it. Every time I zero the red dot and take a few shots, they begin to walk, always to the right as the red dot shifts to the left. I thought the Holosun could tolerate the 10mm recoil but not in my experience. Anybody out there experience the same? I'd like to hear from you.
Thanks in advance!

Thomis

 

[Gordon]

I have the same on my X ten, BUT they require a "sealing plate" to engage the recoil lugs on the Xten slide.

C&H Precision Weapons SIG Sauer P320 RX/X Series ROMEO1 Pro w/ RMR Holes Filler Plate SGRX-RSH-FIL Color: Black, Finish: Mil-Spec Type III Hard Anodized​

It includes the proper screws . Its very thin but has the two lugs which engage the 507c on one side and recesses that engage the Sig Rmr lugs , it is made of high tensile alloy

​

 

[macadore]

Why can't you mount the Holosun directly to the slide?

 

[Gordon]

I just explained it, you can but it wont be stable as the 507c does not have the recesses or protrusions to engage the Sig Xten recoil lugs in the slide. The way they cut the slide only The Sig Romeo 2 does and the RMR Leupold Delta Pro or something. Anyway when I bought that sealing plate it became obvious. Also they give you high tensile strength screws that fit exactly with the the plate, slide and 507C with the exact depth required . The plate is only a 1/16th of an inch thick, if that , it does NOT raise the sight up appreciably but does lock it in place and fill in the gaps around the 507C.
.

 

[irishlad]

Why can't you mount the Holosun directly to the slide?

Great answer, surprised OP didn't respond.

 

[TexasWestPointer]

Do you know if you can co-witness the sights with the plate and the 507c? Anyone try the 507k? Thanks for all the good info on this thread.

Jeff in Texas

 

[JDeere]

I put the Eotech Eflx on my XTen and it lasted all of 300 rounds before the dot moved out of sight. I sent it back to Eotech and they replaced it with what they said was an upgraded model. So far so good. I do have to say they were very responsive...