#Sig 556 rifle serial number lookup series
Lastly we have made sure that all our parts are I interchangeable with the Original to allow the customers who already own a SIG 556 1st Series Flip Sight to replace their Blade with one of ours. Unlike the original sight we have added a Center Alignment Marking to assist the shooter upon installation. It also allows the shooter to have a more pin point accurate choice of bullet impact. The other is a blade that is narrowed at the top to a standard Target Width of 0.080" wide, which vastly improves your ability to see and track. One is the standard size but with a fiber optic dot inserted. We have given the customer the choice of 2 different blades. The detent is crisp and while you are able to push the Blade past the upright vertical position it automatically snaps back to the correct up right position once you let go. This allows the Blade to be moved up and down with easy, yet keeps it in either position that it was set in during firing. We have solved these problems by holding a tighter tolerance and replacing the poor quality spring and detent with a standard AR15 set up. The Blade can also be pushed (and it will stay) past the vertical up right position. The Blade has very poor positive lock, meaning that it is either very hard to move or it flops up and down when the weapon is fired. The Blade is too wide and covers too much of the target area. The worst issues all focus around the Blade. If you own one of the original SIG USA Flip Front Sights you will know of it's many short comings. Most were " Optics Ready Models" only which meant that they had no sights at all, not even the in the rail nail file sight. This is our version of the Original SIG USA Flip Up Sight that came on only a few of the first series SIG 556s. Spare / Extra Front Sight Blades are available separately.
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