Geissele Automatics Super Gas Block .750" Stainless Steel SGB

Geissele Automatics, LLC
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Geissele is famous for their practically bomb proof triggers, and they now bring that same expertise to gas blocks. The gas block and the way that it mounts is one of the most important facets in making sure that your AR-15 stays reliable.

The Geissele Super Gas Block (SGB) is precision investment cast from 17-4 precipitation hardening stainless steel, which combines superior corrosion resistance with high strength. It is designed to fit under most full length free floating rails such as the Geissele Super Modular Rail. The bore of the SGB is machined to closely fit around .750 diameter mounting bosses found on most M4 Carbines, AR-15 and AR-10 type rifles.