User Panel
User Panel
User Panel
|
Posted: 8/13/2005 6:24:51 PM EDT
[#1]
My CMT bolt/carrier I just got from Bravo Co. looks like it was staked with a sharp bladed chisel.
A straight stake on both sides of the allen head screw perpendicular to the firing pin. WIZZO |
|
|
|
Posted: 8/13/2005 6:32:32 PM EDT
[#2]
Chuck the bolt carrier up tight in a bench vice padded with wood blocks.
Take a center punch and stake it in three places around each bolt head. Start the mark a half millimeter from the edge of the hole. When you get a bit of depth from a couple of straight down strikes, angle the punch toward the hole a bit and start working the material against the head of the bolt. |
|
|
|
Posted: 8/13/2005 6:35:20 PM EDT
[#3]
We restaked my friends Bushy for a second time . Really peened em over 4 points to each bolt head. So far so good.
|
|
|
|
Posted: 8/13/2005 7:01:36 PM EDT
[#4]
Just make sure you don't create any burrs that protrude beyond the sides of the carrier key that could contact the reciever. If you do, lightly file/stone them down.
Staking is far superior to loctite as you are securing the head and not the shaft. By loctiting carrier key screws, you are quite liable to snap the head off of the shaft if you ever need to remove them to replace the key at some future time and then life gets real fun. |
|
|
|
Posted: 8/13/2005 7:29:50 PM EDT
[#5]
Thanks for the quick replies! Yeah, I'm not a big fan of Locktite on anything that gets real hot. I just want it to stay together--seems like I've heard horror stories of these things coming off and causing damage. I've had this carrier laying around for years and finally got a CMT bolt for it. When assembling it, I noticed the light stake marks around the bolts and checked them for tightness. They were loose. Looks like I'll break out the chisel and have at it! |
|
|
|
Posted: 8/13/2005 7:44:59 PM EDT
[#6]
I recommend you use a center punch, much more forgiving and precise.
|
|
|
|
Posted: 8/13/2005 8:16:02 PM EDT
[#7]
While I don't disagree with HeavyMetal, this is what my new one looks like.
 CMT most likely did it with a machine, so they're gonna be more precise. The center punch sounds like it would work well. WIZZO |
|
|
|
Posted: 8/14/2005 6:21:49 AM EDT
[#8]
I use a "chisel" tool ground from a 1/4" drill bit. For me, works much better than a center punch.
|
|
|
|
Posted: 8/14/2005 2:25:11 PM EDT
[#9]
WIZZO, I have heard two different theorys on staking. One is like yours where a tool with a flat surface is used to strike across the entire surface of both the key and the screw. The I have heard you are not to touch the screw with the tool If you look at the sides of the screw, they have small ridges in them. The proper way to stake is to mash some of the material from the key into the side of the screw so the ridges will hold the screw in place and prevent it from turning. I dont know which way is right. I guess whatever holds the scre win place. |
|
|
|
|
Posted: 8/14/2005 5:37:33 PM EDT
[#10]
Don't be afraid to move some material, roll that edge right into the cap screw' radius on the head so as to keep the screw from going anywhere.
|
|
|
|
Posted: 8/14/2005 8:20:22 PM EDT
[#11]
Dace,
I'm no expert, and I haven't staked any of these, so I was just going with what I had in front of me. I'm not sure which way is proper either, but I think you should be good to go as long as the screws are held in place securely. SBR7_11 seems to have some really good stakes. Those don't look like they're going anywhere. WIZZO |
|
|
|
Posted: 8/15/2005 1:26:04 AM EDT
[#12]
|
|
|
|
Posted: 8/16/2005 2:09:14 AM EDT
[#13]
I just picked up a CMT bcg from G&R Tactical, that is exactly how mine is staked. |
|
|
|
|
Posted: 8/16/2005 2:28:17 AM EDT
[#14]
 broken 1/16" pin punch ground to shape  proper (factory replicates) staking |
|
|
|
Posted: 8/16/2005 7:21:50 AM EDT
[#15]
This is the recommended staking repair in the tech manual. Try to move metal from the key into the screw, essentially locking the screw in place. |
|
|
|
|
Posted: 8/16/2005 6:55:43 PM EDT
[#16]
that's field replacement staking. if you're in the field or, like unit armorers, lack a proper punch you use that.
 FWIW. the easist way I've found to stake the key is to rest the carrier between the open jaws of a vise, key atop one jaw, bottom rib atop the other. |
|
|
|
Posted: 8/16/2005 6:59:37 PM EDT
[#17]
Ya................ok, Mr. Techincal.  
|
|
|
|
|
Posted: 8/22/2005 10:49:27 PM EDT
[#18]
|
|
|
|
Posted: 8/23/2005 5:24:05 AM EDT
[#19]
yes, this is the way that I do it also. I also used a droked punch that I ground down. I lay the carrier on its side on a piece of cardbord and put one foot on it to hold it still. The key is also touching the cardbord so it dosent moove when you punch it. Get the punch just right and give it a wack with a hammer. It looks the best by far. |
|
|
|
|
Posted: 10/11/2005 9:59:27 PM EDT
[#20]
I've found it's easiest to lay the BCc on top of my vise with the jaws open just enough to let the side of the key and the center feed rib underneath rest on them. Solid work surface and the BC doesn't slide.
|
|
|
|
Posted: 12/2/2005 8:27:44 PM EDT
[#21]
|
|
|
|
Posted: 12/3/2005 12:17:25 AM EDT
[#22]
A diamond point chisel works like a charm.
|
|
|
|
Posted: 12/3/2005 2:53:59 PM EDT
[#23]
tag
|
|
|
|
Posted: 12/4/2005 8:22:36 AM EDT
[#24]
top punch for carrier key and bottom punch for castle nut to end plate on car stocks.   |
||
|
|
|
Posted: 12/18/2005 5:14:41 AM EDT
[#25]
|
|
|
|
Posted: 12/18/2005 5:49:11 AM EDT
[#26]
This is a bit off topic.
In addition to staking the bolts, would it be OK to use red LokTite or Devcon Steel Putty on the threads for added security? |
|
|
|
Posted: 12/18/2005 6:03:44 AM EDT
[#27]
the LocTite will come off, the Steel Putty might work but you'd be screwed trying to replace the key later. Neither method retains the cap if it should break off.
|
|
|
|
Posted: 12/18/2005 6:06:37 AM EDT
[#28]
Thanks. That answers that question. No need to reinvent the wheel; I'll stick to what is proven.
|
|
|
Win a FREE Membership!
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
