Notice something wrong with this picture? > Maintenance & Cleaning

Posted: 9/2/2008 8:32:26 PM EDT

This rifle ran fine at the range yesterday. Go figure. BSW

Posted: 9/2/2008 8:40:32 PM EDT

[#1]

Missing a carrier key screw, and the one that is there isn't staked. I'd get it squared away, because it won't work well for long.

What brand by the way?

Posted: 9/2/2008 9:43:51 PM EDT

[#2]

Its staked, just not correctly. Looks like the early "single stake". Is the first screw missing, or sheared off? Id replace both and stake them to current specs.

Posted: 9/2/2008 10:58:54 PM EDT

[#3]

Yup...I had that happen on my old Armalite.Mine actually stopped running when the ket took the gas tube out.
Personally I just replaced all of mine with properly assembled LMT BCG's...no more problems.
Quib has a do it yourself staking thread somewhere around here.All a man needs to know on the subject.

Posted: 9/3/2008 8:25:08 AM EDT

[#4]

Quoted:
Its staked, just not correctly. Looks like the early "single stake". Is the first screw missing, or sheared off? Id replace both and stake them to current specs.

Forward screw is missing its head. What you see in the hole is the fatigue cracked surface where the head broke off.

Not really sure how long ago this happened. Don't remember where I got the BCG from but it has about 2.5 k rounds thru it. It came with the crap side staking and I restaked with a center punch.

Yep, I'll be ordering a couple sets of gas carrier key screws and a spare gas carrier key since I discovered last night I don't have any. I am anticipating much joy trying to get the broken off screw out.

BSW

Posted: 9/3/2008 11:18:11 AM EDT

[#5]

Quoted:

Quoted:
Its staked, just not correctly. Looks like the early "single stake". Is the first screw missing, or sheared off? Id replace both and stake them to current specs.

Forward screw is missing its head. What you see in the hole is the fatigue cracked surface where the head broke off.

Not really sure how long ago this happened. Don't remember where I got the BCG from but it has about 2.5 k rounds thru it. It came with the crap side staking and I restaked with a center punch.

Yep, I'll be ordering a couple sets of gas carrier key screws and a spare gas carrier key since I discovered last night I don't have any. I am anticipating much joy trying to get the broken off screw out.

BSW

Center punch

Drill Press

Broken screw extractor (easy-out).

10 minutes prep time, 2 minutes actual working time.

Posted: 9/3/2008 11:32:40 AM EDT

[#6]

Quoted:

Quoted:
Quoted:
Its staked, just not correctly. Looks like the early "single stake". Is the first screw missing, or sheared off? Id replace both and stake them to current specs.

Forward screw is missing its head. What you see in the hole is the fatigue cracked surface where the head broke off.

Not really sure how long ago this happened. Don't remember where I got the BCG from but it has about 2.5 k rounds thru it. It came with the crap side staking and I restaked with a center punch.

Yep, I'll be ordering a couple sets of gas carrier key screws and a spare gas carrier key since I discovered last night I don't have any. I am anticipating much joy trying to get the broken off screw out.

BSW

Center punch

~~Drill Press~~ Lefthand drillbit
~~Broken screw extractor (easy-out).~~
~~10 minutes prep time, 2 minutes actual working time.[/~~quote] 10 seconds if screw not loctited in.

AB

Posted: 9/3/2008 1:28:35 PM EDT

[#7]

Perfect example of why you do a good PMCS when you clean.

You just never know what you might find.

Posted: 9/3/2008 2:11:23 PM EDT

[#8]

I now see the concept of grade 8 fasteners being worth the money.

Good thing you found that now!

Posted: 9/6/2008 10:22:29 AM EDT

[#9]

Update:

Replacement gas carrier key screws came in this morning. Midway had them and offered USPS Priority Mail.

Leading screw came out just fine. Leaving me with this.