Pinned gas block

[white spaniard]

HI anyone know if anyone makes a pinned gas block? I am buying a FF rail and read somewhere that the clamp on ones had reliability issues such as them coming loose. Thanks.

[Col_Crocs]

No one makes a gas block with factory pin holes. You get one with set screws and either get it pinned or pin it yourself. It's a "pair specific" (barrel&GB) job rather than a general item you can swap between barrels or vice versa.
Adco and Rainier both offer GB pinning. Have it reamed for a taper pin while youre at it.

[Todd.K]

The FSB/gas block is pinned while on the barrel, after that it is an assembly and they stay together.

Just about any set screw gas block can be pinned.