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Posted: 2/10/2018 9:10:49 PM EDT
[#1]
How I do it too. Never had one come loose.
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Posted: 2/10/2018 9:12:03 PM EDT
[#2]
I have always used a magwell block
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Posted: 2/10/2018 9:17:20 PM EDT
[#3]
Quote HistoryQuoted:
How I do it too. Never had one come loose. |
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Posted: 2/10/2018 10:00:39 PM EDT
[#4]
Thanks guys, I thought I was the only one who used improvised methods
 . I do stake the castle nut also.
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Posted: 2/10/2018 11:30:01 PM EDT
[#5]
I clamp the bottom flat part of the stock tube in a smooth jaw vise hold back against the lower part of the lower and grip and tighten the nut.
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Posted: 2/11/2018 12:41:00 AM EDT
[#6]
I clamp the lower directly in the vise (as described in the tech manual) with a set of rubber padded vise jaw caps.
You cannot reach the 38-42 foot pound torque spec by holding the lower receiver between your knees. |
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Posted: 2/11/2018 1:33:51 AM EDT
[#7]
I clamp the lower between my legs too i stake the castle nuts too
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Posted: 2/11/2018 1:40:39 PM EDT
[#8]
Geissele makes a tool for this.
https://geissele.com/tools/reaction-block-ar15-m4-m16-mil-spec-buffer-tube-only.html ETA-not sure how to make link hot |
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Posted: 2/11/2018 2:32:39 PM EDT
[#9]
Quote HistoryQuoted:
You cannot reach the 38-42 foot pound torque spec by holding the lower receiver between your knees. If you cannot, you need stronger muscles. I prefer the vice setup though. |
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Posted: 2/11/2018 3:23:33 PM EDT
[#10]
Quote HistoryQuoted:
Bullshit. If you cannot, you need stronger muscles. I prefer the vice setup though. Quote HistoryQuoted:
Quoted:
You cannot reach the 38-42 foot pound torque spec by holding the lower receiver between your knees. If you cannot, you need stronger muscles. I prefer the vice setup though. When I first started clamping lowers in my vise to torque receiver extensions and castle nuts to spec, the jaws wanted to spread open and the lower wanted to twist out of the jaws, which led to me buying a much better vise than the one I had before... Perhaps my previous vise was just junk, it wouldn't hold my Geissele Super Reaction Rod very securely either. This is the vise that I used before, but it was under the Colombian brand name. > Link. This is the vise that I use now. > Link. |
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Posted: 2/11/2018 4:21:02 PM EDT
[#11]
The title of this thread is confusing? "Securing the upper when installing an RE"
What does the upper have to do with installing a receiver extension, unless we are talking about something completely different than what I am thinking about. I don't normally have an upper on my lower when I am installing the receiver extension. 
That said, I did install a castle nut the other night without the vise, I just tightened it down real good with my spanner wrench then took a punch/hammer and tapped it firmly a couple of times to get it a bit tighter |
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Posted: 2/11/2018 6:36:07 PM EDT
[#12]
Quote HistoryQuoted:
The title of this thread is confusing? "Securing the upper when installing an RE" What does the upper have to do with installing a receiver extension, unless we are talking about something completely different than what I am thinking about. I don't normally have an upper on my lower when I am installing the receiver extension.
That said, I did install a castle nut the other night without the vise, I just tightened it down real good with my spanner wrench then took a punch/hammer and tapped it firmly a couple of times to get it a bit tighter  .
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Posted: 2/11/2018 7:13:18 PM EDT
[#13]
Quote HistoryQuoted:
You cannot reach the 38-42 foot pound torque spec by holding the lower receiver between your knees. |
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Posted: 2/11/2018 8:26:33 PM EDT
[#14]
Quote HistoryQuoted:
Then put it on ground, step on receiver to hold it down, and tighten away. Using the floor as a block is a force multiplier. Quote HistoryQuoted:
Quoted:
You cannot reach the 38-42 foot pound torque spec by holding the lower receiver between your knees. After all, we don't live in Afghanistan and we have access to Brownells through the magic of the internet. 
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Posted: 2/13/2018 12:22:23 AM EDT
[#15]
Quote HistoryQuoted:
I just can't see why anyone would do this though when you can just buy the right tools to do it correctly. After all, we don't live in Afghanistan and we have access to Brownells through the magic of the internet. Quote HistoryQuoted:
Quoted:
Quoted:
You cannot reach the 38-42 foot pound torque spec by holding the lower receiver between your knees. After all, we don't live in Afghanistan and we have access to Brownells through the magic of the internet. Their upper clamshell vice block with insert, and lower mag vice block were my choice. Covers all needs except muzzle work. 
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Posted: 2/13/2018 1:10:57 AM EDT
[#16]
In the beginning, I would put the lower on a towel, hold the lower with one hand and tighten the castle nut with the other. I have since changed over to the Geissele RE holding tool and it's so much nicer and easier.
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Posted: 2/14/2018 1:38:08 PM EDT
[#17]
I generally use a padded vice.
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Posted: 2/14/2018 1:57:42 PM EDT
[#18]
Quote HistoryQuoted:
I generally use a padded vice.  Attached FileBut that Geissele Reaction Block looks like a nice way to torque on a receiver extension and work on a lower receiver. $100 is a bit too steep for me, though  Attached File |
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Posted: 2/14/2018 7:02:53 PM EDT
[#19]
mag block has never failed me yet...
put the whole lower in the vise and wrap it with a shirt. id do that if i had no other option before id put it between my legs... |
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Posted: 2/15/2018 6:16:43 AM EDT
[#20]
The Geissele (sp?) Reaction Block is probably the best way to tighten a castle nut without putting undue stress on the lower receiver while doing it HOWEVER...
It's expensive It only works on Mil-Spec buffer tubes and possibly commercial spec tubes. You'll be SOL trying to use it on a lot of pistol buffer tubes. |
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Posted: 2/15/2018 7:16:06 AM EDT
[#21]
I use a mag well block now. Prior to that, I clamped a metal mag in a vise, popped lower on that. Prior prior to that, I clamped lower in a woodworking bench.
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Posted: 2/15/2018 10:50:27 AM EDT
[#22]
Quote HistoryQuoted:
put the whole lower in the vise and wrap it with a shirt. id do that if i had no other option before id put it between my legs... Sometimes guys need their carbine stocks tightened and staked right there in the patrol office, and Motorpool (the nearest vice) is 30 miles away... and the agency won't equip their armorer with a vice and workbench.
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Posted: 2/15/2018 6:52:58 PM EDT
[#23]
I had a friend make this out of scrap plastic.
Use it like this. 
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Posted: 2/15/2018 7:13:25 PM EDT
[#24]
I started one similar to the above, copied from a post here, that holds the lower around the RE boss. Square block of UHMW with a keyhole like cutout.
Maybe I'll finish it and post a pic. |
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Posted: 2/15/2018 7:33:05 PM EDT
[#25]
I have a magwell block and lower blocks from RGuns. I prefer the lower blocks.
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Posted: 2/15/2018 7:42:12 PM EDT
[#26]
Quote HistoryQuoted:
I had a friend make this out of scrap plastic. http://i1359.photobucket.com/albums/q783/HawgPhixer/gun%20room/REtool1_zpsep1ryuvj.jpg Use it like this. http://i1359.photobucket.com/albums/q783/HawgPhixer/gun%20room/REtool2_zpsei4eqjfc.jpg |
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Posted: 2/15/2018 8:07:11 PM EDT
[#27]
Quote HistoryQuoted: You know, with the price of the Geissele Reaction Block ($100), you or your buddy could make a bit of pocket money by selling these doodads for $25 or so. I'd buy one for that. |
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Posted: 2/16/2018 3:59:51 AM EDT
[#28]
I have OCD, so please excuse me. I made my own.
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Posted: 2/16/2018 12:36:09 PM EDT
[#29]
Slickern snot man! Good job!
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Posted: 2/19/2018 1:55:09 PM EDT
[#30]
Quote HistoryQuoted:
I clamp the lower directly in the vise (as described in the tech manual) with a set rubber padded vise jaw caps. You cannot reach the 38-42 foot pound torque spec by holding the lower receiver between your knees. |
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Posted: 2/19/2018 4:37:49 PM EDT
[#31]
Quote HistoryQuoted: Are you talking about a rifle receiver extension? Or the Castle nut? 38-40 ft lbs is for the rifle receiver extension, (it has a flange for torque), and 40in lbs +/- 2 in lbs for the receiver extension locking nut, (castle nut). You all aren't putting locktight on it too are you? The torque spec for the rifle receiver extension is 35-39Ft-Lbs. As per the manual, I use moly grease on the receiver extension/castle nut threads. |
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Posted: 2/20/2018 9:59:31 AM EDT
[#32]
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Posted: 2/20/2018 10:59:51 AM EDT
[#33]
Quote HistoryYep, that's the spot!
I actually like working on Colt lowers because they don't have selector stops and you can clamp a little bit higher up on the receiver. |
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