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Yes it will fit and work just fine Specifications and Features: Streamlight TLR-1 HL 69266 C4 LED Tactical Weaponlight 800 Lumen 15,000 candela peak beam intensity Concentrated beam with excellent peripheral illumination Powered by Two 3 Volt CR123 Lithium Batteries with 10 year storage life Rail Grip Clamp system attaches/detaches quickly without the use of tools **********8Mounts directly to handguns with GLOCK style rail and all Mil-STD 1913 Picatinny rails Includes mounting keys for GLOCK, Picatinny, Beretta 90Two, S&W 99 and S&W TSW Ambidextrous Momentary/steady on/steady off switch Machined aluminum sealed construction with black anodized finish Fits most light bearing holsters IPX7 Waterproof Operating temps between -40 degrees Fahrenheit and +120 degrees Fahrenheit Overall Length 3.39" Overall Weight 4.18 ounces Assembled in the USA Flat Dark Earth Note: This is the lighter color of th e FDE offerings from Streamlight

Harry, this Light will fit without issue on the S&W 45ACP M&P 2.0 model 11769. An example of what it will look like here : https://www.google.com/search?q=tlr1+on+M%26P+2.0+45acp&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjGw_7bmJPgAhUqx1kKHZ5bCGcQ_AUIDygC&biw=1920&bih=938#imgrc=F79-qtsZrwgcBM: