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Posted: 12/13/2014 3:09:06 PM EDT
[#1]
I use the the magazine type. Never any issues. I have the spikes block.
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Posted: 12/13/2014 3:13:32 PM EDT
[#2]
Pro mag lower vice block (fake magazine type)
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Posted: 12/13/2014 3:40:40 PM EDT
[#3]
I use these in a vise.
Lower vise blocks are not suitable support for torquing things to spec or for removing things that were torqued to spec. Lower vise blocks are for helping with the small easy jobs like installing triggers. |
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Posted: 12/13/2014 3:40:48 PM EDT
[#4]
As long as you're not trying to put a zillion pounds of torque on it, the magazine well blocks will work fine. I carved a couple pieces of wood to cradle the rear end of my lowers for doing that, and wound up with something that worked...but it's a pain to get all of it together and into a vise. Remember, the receiver extension (or castle nut) torque spec is around 40 ft/lb, so even with a short wrench you should be able to get that without putting too much beef into it. Just make sure everything is lined up correctly and you should be able to get the right torque without any risk to the lower.
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Posted: 12/13/2014 6:50:29 PM EDT
[#5]
Well I bought the schuster one. We will see how it is.
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Posted: 12/14/2014 10:43:53 PM EDT
[#6]
I wrap and clamp the extension and take the lower out of the equation. You can really crank on one that's tight as hell from factory this way too, without worry of destroying the lower.
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Posted: 12/15/2014 9:01:08 PM EDT
[#7]
Quote HistoryQuoted:
I wrap and clamp the extension and take the lower out of the equation. You can really crank on one that's tight as hell from factory this way too, without worry of destroying the lower. How do you do it for a rifle receiver extension? |
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Posted: 12/19/2014 3:37:35 PM EDT
[#8]
[Deleted]
Never mind, misread the question. |
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Posted: 12/19/2014 8:08:08 PM EDT
[#9]
Quote HistoryQuoted:
How do you do it for a rifle receiver extension? Quote HistoryQuoted:
Quoted:
I wrap and clamp the extension and take the lower out of the equation. You can really crank on one that's tight as hell from factory this way too, without worry of destroying the lower. How do you do it for a rifle receiver extension? Never had to take a difficult one apart. Putting one on, clamped into vice by lower with an old thermold mag and just good and snug then dab of blue loctite on the screw. Never had one come loose and don't personally use many of them, only on a2 clones. Just haven't had a reason to buy a lower block. Upper blocks however are a different story and I would never recommend trying to do any real upper work without a good one. |
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Posted: 12/19/2014 9:33:33 PM EDT
[#10]
I clamp the square block on the bottom of the reciever extension between two pieces of UHMW in the vise jaws.
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Posted: 12/20/2014 8:00:32 PM EDT
[#11]
Lay lower flat on floor (carpeted). Let grip of lower act as a point to prevent lower from rolling on floor while you torque castle nut to spec. Have done many this way and works well. Really no need for a lower block or such.
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Posted: 12/20/2014 10:59:06 PM EDT
[#12]
You don't need one.
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Posted: 12/20/2014 11:21:28 PM EDT
[#13]
I put soft jaws on the vise. I then clamp the lower in the vise. I do this before I install the FCG or pistol grip, so the rear portion of the lower makes a nice flat surface to clamp.
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Posted: 12/20/2014 11:35:02 PM EDT
[#14]
Quote HistoryQuoted:
I put soft jaws on the vise. I then clamp the lower in the vise. I do this before I install the FCG or pistol grip, so the rear portion of the lower makes a nice flat surface to clamp. This is exactly how I do it. |
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Posted: 12/20/2014 11:54:51 PM EDT
[#15]
Padded vise jaws.
Clamp receiver extension firmly in vise. Hand tighten lock nut, then apply final torque. Stake the lock nut in place. No special jig required. No broken or tweaked lower receiver when you try to get things a wee bit tighter. 
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Posted: 1/2/2015 4:58:29 PM EDT
[#16]
This is what I use to tighten receiver extension nuts.
My preference is to clamp on the receiver extension and minimize the stress on the receiver. |
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Posted: 1/2/2015 5:12:06 PM EDT
[#17]
Quote HistoryQuoted:
Pro mag lower vice block (fake magazine type) This. I used nothing for years and just did it on a table. |
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Posted: 1/2/2015 5:15:37 PM EDT
[#18]
+1 for ProMag set. I use the upper clamshell for upper work and mag block for lower work. Built 8 this way. Never one issue. Got my set at amazon
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Posted: 1/2/2015 5:34:50 PM EDT
[#19]
Quote HistoryQuoted: You don't need one. |
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Posted: 1/3/2015 1:52:02 AM EDT
[#20]
Quote HistoryQuoted:
This is what I use to tighten receiver extension nuts. <a href="http://s883.photobucket.com/user/rbannon1000/media/IMG_2550.jpg.html" target="_blank">http://i883.photobucket.com/albums/ac33/rbannon1000/IMG_2550.jpg</a> <a href="http://s883.photobucket.com/user/rbannon1000/media/IMG_2552.jpg.html" target="_blank">http://i883.photobucket.com/albums/ac33/rbannon1000/IMG_2552.jpg</a> My preference is to clamp on the receiver extension and minimize the stress on the receiver. Where did you get that? |
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Posted: 1/3/2015 10:33:54 AM EDT
[#21]
Quote HistoryQuoted:
Where did you get that? Quote HistoryQuoted:
Quoted:
This is what I use to tighten receiver extension nuts. <a href="http://s883.photobucket.com/user/rbannon1000/media/IMG_2550.jpg.html" target="_blank">http://i883.photobucket.com/albums/ac33/rbannon1000/IMG_2550.jpg</a> <a href="http://s883.photobucket.com/user/rbannon1000/media/IMG_2552.jpg.html" target="_blank">http://i883.photobucket.com/albums/ac33/rbannon1000/IMG_2552.jpg</a> My preference is to clamp on the receiver extension and minimize the stress on the receiver. Where did you get that? That's nice for a carbine extension, though it won't work with round receiver extension. |
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Posted: 1/4/2015 5:31:04 PM EDT
[#22]
Quote HistoryQuoted:
+1 Quote HistoryQuoted:
Quoted:
You don't need one. I use the Mk 0 Feet and Knees Brace Fixture. If I'm lucky and someone else is around I use the Mk 0.1 Friend's F&K&Hands Brace Fixture. It is much more stable. |
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Posted: 1/8/2015 9:31:11 PM EDT
[#23]
Quote HistoryQuoted:
This is what I use to tighten receiver extension nuts. <a href="http://s883.photobucket.com/user/rbannon1000/media/IMG_2550.jpg.html" target="_blank">http://i883.photobucket.com/albums/ac33/rbannon1000/IMG_2550.jpg</a> <a href="http://s883.photobucket.com/user/rbannon1000/media/IMG_2552.jpg.html" target="_blank">http://i883.photobucket.com/albums/ac33/rbannon1000/IMG_2552.jpg</a> My preference is to clamp on the receiver extension and minimize the stress on the receiver. Where did you get that? |
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Posted: 1/8/2015 11:03:15 PM EDT
[#24]
Well I finally got to it. The mag block worked but I got the tube on a few degrees off.
So I didnt like the mag block and the fact that the stock was crooked....and so just used cardboard on the vise jaws and clamped the extension tube flats in it. That worked fine.....and cheap. So I used this method to loosen and re torque the nut and get the stock perfectly straight. 40ft/lbs BTW I used the hammerhead rifle tools wrench and that thing is the best!!! |
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Posted: 1/8/2015 11:15:13 PM EDT
[#25]
Quote HistoryQuoted:
Well I finally got to it. The mag block worked but I got the tube on a few degrees off. So I didnt like the mag block and the fact that the stock was crooked....and so just used cardboard on the vise jaws and clamped the extension tube flats in it. That worked fine.....and cheap. So I used this method to loosen and re torque the nut and get the stock perfectly straight. 40ft/lbs BTW I used the hammerhead rifle tools wrench and that thing is the best!!! 40 FOOT lbs???? |
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Posted: 1/8/2015 11:28:17 PM EDT
[#26]
Quote HistoryQuoted:
40 FOOT lbs???? Quote HistoryQuoted:
Quoted:
Well I finally got to it. The mag block worked but I got the tube on a few degrees off. So I didnt like the mag block and the fact that the stock was crooked....and so just used cardboard on the vise jaws and clamped the extension tube flats in it. That worked fine.....and cheap. So I used this method to loosen and re torque the nut and get the stock perfectly straight. 40ft/lbs BTW I used the hammerhead rifle tools wrench and that thing is the best!!! 40 FOOT lbs???? I read up a pile on it....wasnt the inch/lbs a typo.....anyways 40 inch pounds is almost nothing....I can torque a nut to 40 inch lbs with one finger. That isn't going to hold much. 40 ft/lbs seems a bit stout but that sucker ain't movin. |
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Posted: 1/9/2015 12:02:29 AM EDT
[#27]
Quote HistoryQuoted:
I read up a pile on it....wasnt the inch/lbs a typo.....anyways 40 inch pounds is almost nothing....I can torque a nut to 40 inch lbs with one finger. That isn't going to hold much. 40 ft/lbs seems a bit stout but that sucker ain't movin. Quote HistoryQuoted:
Quoted:
Quoted:
Well I finally got to it. The mag block worked but I got the tube on a few degrees off. So I didnt like the mag block and the fact that the stock was crooked....and so just used cardboard on the vise jaws and clamped the extension tube flats in it. That worked fine.....and cheap. So I used this method to loosen and re torque the nut and get the stock perfectly straight. 40ft/lbs BTW I used the hammerhead rifle tools wrench and that thing is the best!!! 40 FOOT lbs???? I read up a pile on it....wasnt the inch/lbs a typo.....anyways 40 inch pounds is almost nothing....I can torque a nut to 40 inch lbs with one finger. That isn't going to hold much. 40 ft/lbs seems a bit stout but that sucker ain't movin. Agreed. I'm heavy handed with fasteners (too much so) and I'm 100% positive mine are WELL over 40 ft/lbs (I hand wrenched a barrel nut to 100 ft/lbs when "seating" my first barrel nut  ). I don't use a torque wrench on castle nuts (unlike barrel nuts), but rest assured, they are WELL over 40 ft/lbs (I'd guess around 60), then staked. Those bad boys are practically permanent!
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Posted: 1/9/2015 6:05:57 AM EDT
[#28]
I made this just because.
 2014 AR RAILS 024 by BLACKLIGHT007, on Flickr
 2014 AR RAILS 021 by BLACKLIGHT007, on Flickr
 2014 AR RAILS 023 by BLACKLIGHT007, on Flickr
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Posted: 1/9/2015 6:25:35 AM EDT
[#29]
Nothing to contribute? Don't post - Eric802
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Posted: 1/9/2015 9:36:39 AM EDT
[#30]
Quote HistoryQuoted:
I use the Mk 0 Feet and Knees Brace Fixture. If I'm lucky and someone else is around I use the Mk 0.1 Friend's F&K&Hands Brace Fixture. It is much more stable. Quote HistoryQuoted:
Quoted:
Quoted:
You don't need one. I use the Mk 0 Feet and Knees Brace Fixture. If I'm lucky and someone else is around I use the Mk 0.1 Friend's F&K&Hands Brace Fixture. It is much more stable. I use the same model. 
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