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The Magpul PTS Back-up sights are not any ordinary sights, they really are handsome-looking things. There's something quite muscular and "beefy" about the shape of this that give it a futuristic, cutting-edge look. ***Product Details: Folding Back-Up Sight - Spring Loaded Flip-Up system, release lever can be reached on left, right & top position - Solid click sound when sights are locked into position - No need to release lock to fold.  Rear sight comes with Dual Apertures and Adjustable Windage - The MBUS Fits All 20mm Rail Equipped Weapons - Constructed of same DuPont Polyer material as the Famous PMAG.These sights will fit your standard weaver / picatinny rail!!!*** ===---MAGPUL PTS PRODUCT..

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