Southport, CT -(FirearmsGuide.com)- The new AR-556® Optics Carbine is built on the same platform as the original AR-556® and features a flat top Picatinny upper receiver and same-plane Picatinny gas block for easy attachment of a magnified optic, red dot or use of open sights.
The milled gas block with integral Picatinny rail is located at a carbine-length (M4) position for improved balance and handling.
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