Proper gas key staking...?

[kokopelli]

opinion on the staking job, please.

These are from the phone- I'm charging the camera batteries to get some good close ups...

[JustShootIt]

Looks good to me...

If u put decent pressure on the wrench and they don't turn, I think they'll be ok

[Frailer]

Tough to tell from the photo, but it doesn't look as if that "staking" is doing anything. Does the displaced metal even touch the screw heads?

[kokopelli]

Tough to tell from the photo, but it doesn't look as if that "staking" is doing anything. Does the displaced metal even touch the screw heads?

No- it doesn't at all. I'm going to take some good close-ups when the camera is charged; I'll post those here. I have an email into Anderson Customer Service as well; after the 1/4" too short Take-Down pin, plus a couple more defective parts I found, I'm not having good luck with their parts.

Check out the charging handle latch:

[1fastmach1]

What does it mean to "stake" the gas key. This is the first time I've heard of this.

[WLJ]

Looks good to me...

If u put decent pressure on the wrench and they don't turn, I think they'll be ok

This

[kokopelli]

What does it mean to "stake" the gas key. This is the first time I've heard of this.

'Staking' the gas key is simply smashing a bit of the surrounding metal into the side of the hex heads, so that they cannot rotate. Same as a carbine castle nut should be staked...

here is a pic of good, proper gas key staking:

http://www.ar15.com/archive/topic.html? ... 8&t=525732

here is poor/attempted staking:

http://www.m4carbine.net/showthread.php ... -LE-Dealer

[WLJ]

What does it mean to "stake" the gas key. This is the first time I've heard of this.

Basically deforming the metal around the screws just enough to prevent them from turning on their own but still allowing for their removal if need be. Lock-tight won-t work because it lets go in high heat.

[Frailer]

Tough to tell from the photo, but it doesn't look as if that "staking" is doing anything. Does the displaced metal even touch the screw heads?

No- it doesn't at all...

Then it's done wrong. The whole point of staking is to displace metal from the key into the side of the screw head in order to prevent the screw from turning and backing out.

Whether or not staking is necessary is debatable (presuming the screws are torqued properly), but it is "mil-spec," and if you're going to do it you should do it right.

[kokopelli]

What does it mean to "stake" the gas key. This is the first time I've heard of this.

'Staking' the gas key is simply smashing a bit of the surrounding metal into the side of the hex heads, so that they cannot rotate. Same as a carbine castle nut should be staked...

here is a pic of good, proper gas key staking:

http://www.ar15.com/archive/topic.html? ... 8&t=525732

here is poor/attempted staking:

http://www.m4carbine.net/showthread.php ... -LE-Dealer

[1fastmach1]

Ahh thanks. Learn something new every day. I assume my spikes unit was done before it was sent to me. I'll go have a look at mine now.

[kokopelli]

Ahh thanks. Learn something new every day. I assume my spikes unit was done before it was sent to me. I'll go have a look at mine now.

Spikes stakes their DI, but not their piston supplied BCG's...

[1fastmach1]

Ahh thanks. Learn something new every day. I assume my spikes unit was done before it was sent to me. I'll go have a look at mine now.

Spikes stakes their DI, but not their piston supplied BCG's...

I just pulled mine out for a look. It looks GTG. I've never had a piston system although I hear they are great.

[kokopelli]

^^^ That is just about perfect- not too much that the hex's can't be removed, just enough so that they don't move on their own...

[ssracer]

I had a BCM that was well staked...it still managed to come loose

[WLJ]

I had a BCM that was well staked...it still managed to come loose

Always a good idea to check them once in a while even with proper staking

[guncrank1]

The mil spec stake calls for a trapezoid shape punch dented and the screws at certain pound-inch.(35-45)

In other words set the Fat Wrench and tighten screws , then Cranky smash