Standard Super Gas Block – The bore of the SGB is machined to closely fit around .750″ diameter mounting bosses found on most M4 Carbines and AR-15 rifles.
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This gas block and a SS mid length gas tube are the perfect items to accentuate the Bear Creek SS spiral fluted 16"barrel on a rifle build as a Christmas Present for a close friend of mine. Everything has gone together without any problems and is functioning perfectly. I love your prices and the fact that you always seem to have the parts I need and ship them quickly. I thank your employees for the smile on my friends face. Bearcop1
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