GBF (Gas Block, Forward Controls)

[Duffy]

GBF just dropped :)

https://www.forwardcontrolsdesign.com/GBF-_p_203.html

In development since 2018, GBF went through several design changes, culminating in its final design that incorporated many suggestions from users and armorers in mid 2019.

GBF isn't meant to be a light weight gas block. We removed material where it's simply dead weight, we wanted GBF to be small and slick, not for aesthetics reasons, its external shape could affect its hand guards compatibility.

GBF has bosses for barrel pinning, but no holes are drilled. Knurled set screws are included, so is a gas tube pin. Barrel pinning coiled pin can be added at no additional cost.

The late Semper Paratus Arms owner Will Larson is known to many of you. GBF was the last project Will had design input on, and we incorporated both into the production model:

1. Manganese phosphate instead of nitride. Will didn't believe the hard coating was conducive to providing every ounce of seal a gas block could.
2. 3/32 punch access port, forward of the gas tube, to allow a 3/32 punch to go through and dislodge a stuck gas tube.

GBF is machined in heat treated 4140 steel, and manganese phosphate coated.