[cciman]

I have a spare bolt carrier with the gas key bolts tack welded instead of "staked" on top.

Each bolt has 2 tiny dot welds on each head to the gas key. Any idea who made this BCG? Thanks

 

[faawrenchbndr]

I've NEVER seen any manufacturer tack weld gas ket hardware.
That's been done by an individual or a Gunhack!

Welds can do considerable damage to the heat treatment of the carrier & gas key
I would personally not use that carrier. Grind the welds, removed the gas key,
and replace with a new key and hardware. The properly stake.

 

[cciman]

I take that back. Under a magnifying glass they are round punch holes.

 

[cciman]

Even if it were.....I don't think a tack weld would affect the "heat treatment" of a steel carrier, or key, in any measurable way.

We rely on welds for many of our daily items, from car frames, to bridges.

 

[m2hmghb]

Even if it were.....I don't think a tack weld would affect the "heat treatment" of a steel carrier, or key, in any measurable way.

We rely on welds for many of our daily items, from car frames, to bridges.

The difference is that the engineers took into account the weld before it happened, a weld on a gun part is always risky and is best left untouched.

 

[faawrenchbndr]

Even if it were.....I don't think a tack weld would affect the "heat treatment" of a steel carrier, or key, in any measurable way.

We rely on welds for many of our daily items, from car frames, to bridges.

The difference is that the engineers took into account the weld before it happened, a weld on a gun part is always risky and is best left untouched.

Yep,.......I'm a welder at Caterpillar. There is a major difference between
proper welds placed per engineering drawings & some GunHack.

 

[gsr]

Staking the carrier key bolts on top with a center punch is the proscribed method in the M16/M4 TM.

 

[samuse]

I took some metallurgy and the prof summed up the class with "welding is the worst thing you can do to metal".

 

[pag23]

Yep,.......I'm a welder at Caterpillar. There is a major difference between
proper welds placed per engineering drawings & some GunHack.

Properly staked is the way to go...

Eddie rules!!!

 

[Bushflyr]

Staking the carrier key bolts on top with a center punch is the proscribed method in the M16/M4 TM.

Really? :rofl:

 

[cyrsequipment]

pro·scribed pro·scrib·ing

Definition of PROSCRIBE


transitive verb


1: to publish the name of as condemned to death with the property of the condemned forfeited to the state


2: to condemn or forbid as harmful or unlawful : prohibit

 

[surf]

Under a magnifying glass? Are these micro punch marks? Perhaps it isn't staked well either?

 

[Reb 56]

Under a magnifying glass? Are these micro punch marks? Perhaps it isn't staked well either?

Should be staked from the side of the key into the bolts.

 

[FatBoy]

Got Pics??

 

[surf]

Should be staked from the side of the key into the bolts.

While side staking is the better option and much more easily done nowadays with the advent of the MOACKS and similar type tools, staking from the top often called "counter staking" or "field staking" as per the military manuals is still acceptable and was the norm at one time. In reality a good stake job from the side and a single counter stake from the top on each screw is even better.