I have assembled three BCG's in the past.
Used liquid gasket seal on the flat of the key around the gas hole. Then used red Loktite on the screws. Then used the Brownells staking jig. Then filed and sanded the metal displaced by the job.
The Brownells jig is a pretty severe crush compared to other manufacturer stakes, plus the finish comes off around the crush where you have to file it level. It's only cosmetic and you don;t see it when it's in the gun.
Some BCG stakes come in from the top and some from the sides.
You need to stake it because with all the hammering, pressure and heat, the key screws will eventually come lose, even if Loktited.
Some manufacturers don't gasket seal their keys.
I used a tube of cheap automotive silicone instant gasket. Comes out as a black goop and cures in air. Does a similar job in a car engine and works.
.
Used liquid gasket seal on the flat of the key around the gas hole. Then used red Loktite on the screws. Then used the Brownells staking jig. Then filed and sanded the metal displaced by the job.
The Brownells jig is a pretty severe crush compared to other manufacturer stakes, plus the finish comes off around the crush where you have to file it level. It's only cosmetic and you don;t see it when it's in the gun.
Some BCG stakes come in from the top and some from the sides.
You need to stake it because with all the hammering, pressure and heat, the key screws will eventually come lose, even if Loktited.
Some manufacturers don't gasket seal their keys.
I used a tube of cheap automotive silicone instant gasket. Comes out as a black goop and cures in air. Does a similar job in a car engine and works.
.