HK:

USP (full size only) - use HK adapter 69085 with a GL (Standard) key. Compact size - use HK adapter 69091 with a GL (Standard) key.

HK P2000 (new) is supposed to have Picatinny rail.

HK P30 -1913 key.

Note: The rail tilts down slightly from the bore. This may result in laser zeroing difficulty closer than 50 feet (depending on the tolerances of the pistol and laser).

Kimber:

TLE RLII (1911 with rail) - Picatinny key.

Ruger:

KP345 - GL (Standard) key.

SR-9 - GL (Standard) key.

Sig Sauer:

GSR or 1911 Style with flat bottom rail - Picatinny key.

Any aluminum frame SIG with a round bottom rail, including the P220R, P229R, etc.: The Sig round bottom rail departs from the true shape of both the 1913 and Universal standards and may cause an improper fit. The TLR will work with the 1913 key but there will be damage to the finish of both the gun and the light. The retaining bit must be tight.

Newer Sig P series guns are supposed to have a true Picatinny rail. This has not been verified by Streamlight.

SP2022 (Polymer frame): Same comments as for aluminum frames, except that the polymer frame is a little thicker and does not show marks from a clamp. Per SIG, use the 1913 key.

Smith & Wesson:

TSW and 99: the slot is too far back for the standard key and requires the special S&W key. There are many different models of TSW, but as long as it's a TSW with a rail, it uses the S&W key.

M&P Autoloader - Picatinny key.

Sigma - Cannot fit.

Springfield Armory:

Operator (1911 with rail) - Picatinny key.

XD (4 & 5-inch barrels) - GL (Standard) key. Cannot fit 3-inch barrel.

Walther:

99 (New 2004 models): full size ones are nearly the same as the S&W 99 and use the S&W key. Older ones (no slot across the rail and the side grooves closed in front) cannot be fitted with a TLR.

99 Compact – Cannot fit. Rail is too short.

P22 – Cannot fit. Non-standard rail.