Streamlight TLR Keys

Streamlight TLR-2 Mounting to a Sig Sauer P226 MK25 11

Sig Sauer P226 MK25 with Streamlight TLR-S2I like my Streamlight TLR-2 tactical light (a full review is coming eventually). Among its many positive attributes is the fact that it ships with four mounting “keys” that allow the light to be fitted to a wide variety of accessory rails.

And, since my Sig Sauer P226 MK25 comes with true 1913 Picatinny rails, I naturally chose that mounting key for use with my P226. I noticed, however, that the light’s switch mechanism was just out of reach of my right trigger finger… meaning I had to activate the light and laser with my left thumb. That’s something I’m sure I could eventually get used to, but because it’s not how I’ve trained, it felt strange. My Insight M3 tactical light was a better fit, with the switch just barely closer to my trigger finger, but removing the M3 from the Sig’s rails required too much force. Then there’s the fact that the M3 already lives happily on my Glock 17, which is where it wants it to stay.

Glock 17 with Insight M3 tactical light vs. Sig Sauer P226 MK25 with Streamlight TLR-2s

Glock 17 with Insight M3 tactical light vs. Sig Sauer P226 MK25 with Streamlight TLR-2s. Notice the extra space between the rear of the Streamlight and the Sig’s trigger guard.

I’d all but given up on using my TLR-2 with my Sig, until I remembered that the Streamlight came with extra keys. I went down to the workshop to dig out the Streamlight box from my accessory cabinet and took another look at the other mounting keys that came with it.

Streamlight TLR Keys

Streamlight TLR Keys: Glock (Universal), 1913, Beretta 90two, and S&W 99/TSW.

I noticed that the Beretta 90two mounting key was similar in size to the 1913 key, but the exposed key portion was slightly forward vs. that of the 1913 key. I swapped in the Beretta 90two key and remounted the TLR-2 on the Sig P226 MK25.


The light is still mounted securely, but sits just slightly farther back toward the trigger guard — and now perfectly within reach of my trigger finger.

So if any other shooters are dealing with their Streamlight TLR-2 being just out of reach when using the standard 1913 rail key, try swapping it out for the Beretta 90two key. It just might make all the difference you need!