Geissele Super Gas Block – Black

Geissele Super Gas Block – Black

The Geissele Super Gas Block (SGB) is a low-profile gas block designed to fit under most free-floating hand guards, such as the Geissele Super Modular Rail. Its bore is machined to closely fit the .750″ diameter gas block journals found on most M4, AR-15 and AR-10 type barrels.

• Precision investment cast from 17-4 precipitation-hardening stainless steel for strength and corrosion resistance
• Low profile to clear the inside of most free-float hand guards
• Two installation methods: standard set screws, or Geissele’s ‘Bombproof Installation’ with a coil pin through the block and barrel so it cannot slide or twist
• Stainless steel dowel pin included to line the block up with the gas port on Geissele CHF barrels
• Pilot hole for the pin already machined in the block

Check that your barrel has a .750″ journal before ordering. The pinned ‘Bombproof’ installation requires match-drilling the barrel on a milling machine or heavy drill press; Geissele recommends installation by a qualified gunsmith. Instructions for both methods are included.

Specifications:

• Gas block journal diameter: 19.05 mm (.750″)
• Material: 17-4 PH stainless steel, investment cast
• Colour: Black
• Platform: AR-15/M4 and AR-10 barrels with a .750″ journal
• Included: 5/32″ stainless coil pin, stainless dowel pin, instructions
• Manufacturer part number: 05-807B