The Superlative Arms Titanium Adjustable Bleed Off Gas Block is an adjustable gas block that measures 0.813" from the bore to the top of the gas block, which is slightly larger than a standard non-adjustable low profile gas block.
The Superlative Arms Titanium Adjustable Bleed Off Gas Block will be compatible with an M&P-15 Sport II. You will need to use a 0.750" model gas block.
The Superlative Arms Titanium Adjustable Bleed Off Gas Block can be closed off entirely, however, all the pressure can cause damage to the screw as it was not designed to operate whilst closed off completely.
The Superlative Arms Titanium Adjustable Bleed Off Gas Block will work with a MK18 RISII Rail.
The Superlative Arms Titanium Adjustable Bleed Off Gas Block cannot be pinned and welded. The Superlative Arms Titanium Adjustable Bleed Off Gas Block is either secured with set screws or clamped on.