This guide details the straightforward installation of a Streamlight TLR-1 HL weapon light onto a Glock pistol's accessory rail. It emphasizes ensuring the firearm is clear, using the correct mounting piece for the specific firearm (Glock, Sig P320, 1911, or Picatinny rail), and securely tightening the light using a coin. Basic operation of the light's modes (constant-on, momentary-on, strobe) is also covered.
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