This is what 2A Armament says :

 

 

The 2A-Ti gas block is a simple solution for those looking to save weight on the AR-15 style of firearms. By utilizing titanium, weight can be reduced by as much as 40% over standard steel gas blocks. The low profile design works well under hand guards, and anywhere else that space is at a premium.  A basic two set screw design ensures a secure fit, and an easy installation. Blue locking compound is recommended.

    Made from U.S.A. 6AL-4V titanium
    Internal bore:  .625, .750 or .875
    Length:  1.0 inch
    Weight 0.70 ounces
    Bead blasted matte finish
    Low profile design
    Includes two stainless set screws (spacing between set screws is .47)
    Engraved logo on front
    Product of Idaho, MADE IN THE USA
    .750 bore, SKU 2A-TIGB-1
    .625 bore, SKU 2A-TIGB-2
    .875 bore, SKU 2A-TIGB-3

2A Titanium Gas Blocks

$79.00 Regular Price
$75.05Sale Price

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