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A red dot sight is a common classification [1] for a non-magnifying reflector (or reflex) sight that provides an illuminated red dot to the user as a point of aim. A standard design uses a red light-emitting diode (LED) at the focus of collimating optics , which generates a dot-style illuminated reticle that stays in alignment with the firearm ...
An orange or red tip is required in order to differentiate them from firearms. There are still strong restrictions on importing accessories such as holographic sights, red dot sights, and magazines, which require a CII and are subject to administrative taxes. Airsoft is expensive in Brazil, as it costs almost as much as a real firearm in the US.
It is similar in concept to the earlier commercial Weaver rail mount used to mount telescopic sights, but is taller and has wider slots at regular intervals along the entire length. The MIL-STD-1913 locking slot width is 0.206 in (5.23 mm). The spacing of slot centres is 0.394 in (10.01 mm) and the slot depth is 0.118 in (3.00 mm). [8]
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Compared to the Leupold mount, the Weaver rail is not as strong and cannot be adjusted for windage. [ 4 ] W.R. Weaver Co. became Weaver Optics, and was a subsidiary of Meade Instruments Corporation from 2002 to 2008, when it was on-sold to become part of Alliant Techsystems 's Security and Sporting division in Onalaska, Wisconsin.
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The M9A4 was released in 2021 as a direct upgrade for the M9A3. The main updates to the M9A4 include red-dot optic compatible slide and dovetailed tritium night sights, enhanced short reset Xtreme Trigger System, 18-round sand-resistant magazines, and texturized Vertec-style thin grips.
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