I’ve had issues getting my Streamlight TLR-7X to sit well (not too far from the trigger) on my Alpha Foxtrot S15. I’ve also seen folks experiencing the same issue.
I saw a guy posting in the Alpha Foxtrot subreddit a few days ago, sharing several 2011 pictures. I saw that he had a TLR-7X installed and it was sitting perfectly on his S15 rail. I asked him what key he was using.
He first explained that the -7 kit that he bought was for the Springfield Armory Hellcat Pro. He said that he was using the #5 key.
I looked at the keys that came with my -7 and didn’t see any labeled as #5. I then realized that I didn’t have the same -7 kit that he had.
My kit is the 1913 kit. They base the kits on rails of specific guns. 1913 is generic.
I took my light off of my carry gun and remove the key that I was using for it (I put it to the side with the gun, so I wouldn’t get it mixed up with the other keys). I then grabbed the S15 and began testing fitment to see which keys would fit.
My kit came with a “universal” key, and four “1913-” keys, suffixed as 1 through 4.
The “universal key wouldn’t fit on the S15.
The 1913-1, -2, and -3 fit onto the S-15. We’ll talk more of these in a second.
I was already using 1913-4 for my Prodigy DS.
Of 1913-1, 1913-2, and 1913-3, only 1913-3 fit perfectly on the S15. It fits so that the front of the light is flush with the gun’s muzzle, but also close enough to reach the light’s controls. -1 and -2 were sitting too far from the trigger: -1 sat furthest, and -2 sat a bit closer but was still a distance from the trigger guard.
So, here are the keys that I know will fit the AF-1911-S15:
If you’ve the Hellcat kit, use the #5 key.
If you’ve the 1913 kit, use 1913-1, 1913-2, or 1913-3. This a subjective thing, IMO, as each person’s hands/fingers are different, but I chose the #3 key. If the light’s controls are too far from your trigger finger, you’re going to struggle to reach it.
Another thing: almost all TLR-7 lights share the same footprint, so what I mention up above about key fitment applies to other TLR-7 variants, such as the TLR-7 HL-X, or the TLR-7 Sub (for example). They all share the same keys.
Also, if you’ve a TLR-7 variant and have the Prodigy DS Compact, the 1913 kit’s 1913-4 key will fit the DS Compact.
