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AR-15, AR-10, and 458 SOCOM adjustable gas blocks.  Gas blocks used by Bishop Ammunition & Firearms are in low profile only.  They are available in black oxide, titanium, and adjustable titanium which are made by SSL.  The adjustable gas block in titanium by SSL is used due to its patented simplistic design, reliability, ease of use and maintenance. Sort By: Price: Low to High Price: High to Low Most Popular Title Manufacturer Newest Oldest Availability 30 per page 60 per page 120 per page 180 per page 300 per page Page of 1 .750 Low Profile Steel Gas Block with Roll Pins & Wrench -Black List Price: $24.99 Our Price: $19.99 You save $5.00! Muzzle Brake 458 SOCOM 450 Bushmaster List Price: $100.00 Our Price: $75.00 You save $25.00! SLR Adjustable Gas Block Titanium .750" List Price: $169.99 Our Price: $159.99 You save $10.00! Hardened Steel Low Profile Micro Gas Block .750" 458 SOCOM or 450 Bushmaster Muzzel Brake Titanium Adjustable Gas Block - Sentry 7 by SLR