SIG Talk banner
  • Notice image

    SigTalk is a forum community dedicated to SIG Sauer enthusiasts. Come join the discussion about Sig Sauer pistols and rifles, optics, hunting, gunsmithing, styles, reviews, accessories, classifieds, and more!

Questions about MK25

2K views 23 replies 12 participants last post by  bblr 
#1 ·
Been on a Sig obsession for quite some time now, so I’m forced to purchase one. Didn’t have to convince myself that hard though haha. Anyways I’m looking to buy a MK25. Is there anything I should know before buying one? Has anything been changed on them thoughout the years or are they all the same? Second question I want to purchase a light for it, most likely gonna be a Surefire X300. I’ve read they have fitment issues. How true is this? The X300 comes in 2 configurations A or B. Would one of these be better suited to fit?
 
#8 ·
Welcome to Sig Talk from the southwest corner of Indiana.

The "fitment" issues are with some of the other model Sigs, that have the propriety Sig specification rail. The Mk25 has a true Picatinny specification rail, so you should not have a problem. The problem with the Sig rail can be minimized by finding a light with multiple "keys" to fit the cross slots, which stabilize fore and aft movement, and bear the brunt of the recoil. The same can be said of the Mk 25 also, if the light is not designed for a Picatinny specification rail.
 
#12 ·
My MK25 is 2012 production, IIRC. It has not been used very much, but performance has been flawless with a variety of factory 9mm ammunition. I've seen some discussion as to whether or not the hard chrome bores might have been eliminated on later production. I don't know the answer on that issue. I'm not aware of any negative issues with any particular years of production. I'm using an old Insight M3X light on mine. Fits the MK25 Picatinny spec rail properly. I definitely prefer the Picatinny type rail on the MK25 over the proprietary rail SIG uses on most other models.......ymmv
 
#13 ·
MK25 is the only P226 I have. I've had a couple of other P226s in the past but sold them all.

Although I prefer the P229 size better but when things went to hell, the Mk25 is the one I'd carry with me with a couple of 18/20rd mags and a TLR-1 light. I'd probably keep a P229 in the backpack though :))
 
#14 ·
The Surefire X300U-A uses a spring loaded quick release system for attachment.

The Surefire X300U-B uses a screw to tighten up the light to the rail.

Either will work on the Sig rail.

I have both. I prefer the quick release spring attachment. Both of mine are 600 lumens but I see that these now come in 1000 lumens.
 
#19 · (Edited)
I just purchased my MK25 last week and am extremely happy. The finish wear I have seen (620 rounds down-range already believe it or not) was anticipated and is a regular point fo discussion....don't let that translate to concern.
 
#22 ·
Right! Gotta keep that M45A1 clean and happy. The finish is one of my favorites.
 
  • Like
Reactions: winterwar
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top