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.875 AR-15 Gas Blocks

28 products

A .875-inch gas block fits heavy-profile AR-15 barrels and many AR-10 barrels, whose gas block journal is thicker than the usual .750. These gas blocks all have a .875 bore. Check your barrel's journal or listing before you buy: the block must match it exactly.

Compare .875 gas blocks from every store we track.

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AR-15 Adjustable Gas Block .875" Solid MeloniteSuperlative Arms———$89.995 storesIn stock
AR-15 Adjustable Gas Block .875" Clamp On MeloniteSuperlative Arms———$89.995 storesIn stock
Rainier Arms Adjustable Gas Block Solid Bleed Off -.875 BlackRainier ArmsBlack——Black$89.991 store
Superlative Arms Adjustable Gas Block Bleed Off Clamp on -.875Superlative Arms———$89.991 store
Superlative Arms Adjustable Gas Block Bleed Off Solid -.875Superlative Arms———$89.991 store
Troy Low-Profile Gas Block, .875 – SGAS-875-00BT-00———$49.996 storesIn stock
AR-15 Clamp On Adjustable Gas Block .875" StainlessSuperlative Arms.875 · Stainless Steel.875Stainless Steel—$89.996 storesIn stock
AR-15 Clamp On Titanium Adjustable Gas Block .875" BlackSuperlative Arms.875 · Black.875—Black$188.995 storesIn stock
AR-15 Clamp On Titanium Adjustable Gas Block .875" GraySuperlative Arms.875 · Grey.875—Grey$188.995 storesIn stock
AR-15 Solid Adjustable Gas Block .875" Stainless SteelSuperlative Arms.875 · Stainless Steel.875Stainless Steel—$89.996 storesIn stock
AR-15 Solid SS Adjustable Gas Block .875" TanSuperlative Arms.875 · Coyote Tan.875—Coyote Tan$89.995 storesIn stock
AR-15 Solid Titanium Adjustable Gas Block .875" BlackSuperlative Arms.875 · Black.875—Black$188.995 storesIn stock
AR-15 Solid Titanium Adjustable Gas Block .875" GraySuperlative Arms.875 · Grey.875—Grey$188.995 storesIn stock
.875" Gas Block For AR-15 Black NitrideSons Of Liberty Gun Works.875 · Nitride · Black.875NitrideBlack$45.002 storesOut of stock
AR-15 Gas Block Low Profile .875 Steel BlackMidwest Industries.875 · Black.875—Black$44.952 storesOut of stock
AR-15 Gas Block Mk12 .875 SS SSBadger Ordnance.875.875——$68.991 storeOut of stock
Profile Low Prof Adjustable Gas Block W/Screws .875" For AR-15 BlackAero Precision.875 · Black.875—Black$71.992 storesOut of stock
AR-15 Gas Block Low Profile .875 Steel Black NitrideOdin Works.875 · Nitride · Black.875NitrideBlack$75.555 storesIn stockSale
Low Profile Gas Block .875" W/Aero Logo For AR-15 NitrideAero Precision.875 · Nitride.875Nitride—$15.523 storesIn stockSale
Low Profile Gas Block .875" W/Aero Logo For AR-15 PhosphateAero Precision.875 · Phosphate.875Phosphate—$25.491 storeOut of stock
Low Profile Gas Block .875" W/No Logo For AR-15 NitrideAero Precision.875 · Nitride.875Nitride—$25.491 storeOut of stock
Low Profile Gas Block .875" W/No Logo For AR-15 PhosphateAero Precision.875 · Phosphate.875Phosphate—$22.492 storesOut of stockSale
Micro Gas Block .875 Set Screw SteelSLR Rifleworks.875.875——$47.991 storeOut of stock
Micro Gas Block .875 Set Screw TitaniumSLR Rifleworks.875.875——$107.011 storeOut of stock
Sentry Gas Block .875 Adjustable Steel Set ScrewSLR Rifleworks.875.875——$134.563 storesIn stockSale
Sentry Gas Block .875 Adjustable Titanium Set ScrewSLR Rifleworks.875.875——$208.472 storesIn stockSale
AR-15 Adjustable Lo-Pro Gas Block .875 Steel BlackSadlak Industries.875 · Black.875—Black$24.002 storesOut of stock
AR-15 Clamp-Style Lo-Pro Gas Block .875 Steel BlackSadlak Industries.875 · Black.875—Black$27.991 storeOut of stock