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Until now, WMLs require an adaptor to fit the USPs. No more! I just got off the phone with Streamlight and it looks like their new TLR series weapon mounted lights (WML) will fit a USPf. It does not have to slide over the end of the grooves like many Piciatinny compatible devices. The TLR series clamps on and tightens with a thumb/coin screw. I love it - it fits all my gun rails without a problem.
BUT, it will require two things: One, the locking key needs to be removed from the TLR light. That's easy, just remove the allen head cap screw on the side of the light to release the locking key.
Second, and I'll be looking at this tonight, Streamlight tells me that there is just a bit of interference with the light at the trigger guard. They say, that the light can be machined (filed) slightly or the USP frame (trigger guard) slightly and it will fit.
Now I don't know how secure it is yet, but I can't imagine it to be a problem because of the clamping action of the TLR mount. Streamlight told me if it works - go for it.
The other consideration is the USP rails are about .05 inches wider than Picitinny rails, but that just means the light will set to one side of center by 0.025 inches. Even with my TLR-2 (with laser) the laser would only be off by .025 inches. That's not bad considering the vertical displacement of the laser from the bore is about an inch.
But I'm also going to look at the feasibility of machining .025 inches off each rail - maybe.
Anyway, should be able to let you know more and some specifics tomorrow.
BUT, it will require two things: One, the locking key needs to be removed from the TLR light. That's easy, just remove the allen head cap screw on the side of the light to release the locking key.
Second, and I'll be looking at this tonight, Streamlight tells me that there is just a bit of interference with the light at the trigger guard. They say, that the light can be machined (filed) slightly or the USP frame (trigger guard) slightly and it will fit.
Now I don't know how secure it is yet, but I can't imagine it to be a problem because of the clamping action of the TLR mount. Streamlight told me if it works - go for it.
The other consideration is the USP rails are about .05 inches wider than Picitinny rails, but that just means the light will set to one side of center by 0.025 inches. Even with my TLR-2 (with laser) the laser would only be off by .025 inches. That's not bad considering the vertical displacement of the laser from the bore is about an inch.
But I'm also going to look at the feasibility of machining .025 inches off each rail - maybe.
Anyway, should be able to let you know more and some specifics tomorrow.