View Full Version : Magpul ACS Stock Monopod Rail
I was able to figure out a clean way to do this while working on and waiting for parts for my .308 build. This might also work for other Magpul stocks like the STR. I had seen this question before but was happy that the stock did not need to be altered and no screws or backing plates were required. The key was also to find a 1.25" rail. I got lucky and found this rail attachment at the gun show this weekend for $12.
I think the Accu-Shot BT12-QK will now work and be the correct elevation with the Atlas Bipod?
It required some hand dremel work and hand fitting (with the cut off wheel and grinding wheel) then some black marker to cover up any slips. :D
Some material had to also be removed from the front bottom of the rail as the stock plastic insert is only one inch long but did have a matching radius (to the stock botton) which was also nice.
Anybody else interested in doing this?
http://i1093.photobucket.com/albums/i430/kruzan2/IMG_0506.jpg
http://i1093.photobucket.com/albums/i430/kruzan2/IMG_0493.jpg
http://i1093.photobucket.com/albums/i430/kruzan2/DSCN2403.jpg
can you take a side shot of the railed piece thats inside the stock?
It's in there tight. I went a little deeper than needed trying to coppy the plastic piece, but not bad for a first try. I also took some material from the top of the bottom loop to keep the rail height (or depth) higher.
http://i1093.photobucket.com/albums/i430/kruzan2/IMG_0507.jpg
Its obviously rougher looking in the Iphone photo, but I did not worry about it or refinishing the part because you don't really see it when installed.
http://i1093.photobucket.com/albums/i430/kruzan2/IMG_0509.jpg
Good job.
https://www.m4carbine.net/showthread.php?t=105633
Sine I bought this part loose and unmarked or not boxed off a table at the gun show I did some digging online to find it. (I thought it was one of those made in China no name deals.)
It appears to be a NcStar part designed to add lasers or lights to a scope tube. It is important to note there are two different rail lengths I saw for this part and the short one is the one to use.
NCSTAR TACTICAL 2 RAIL MOUNTING SYSTEM
http://www.ncstar.com/scripts/prodView.asp?idproduct=589
http://www.ebay.com/itm/NCSTAR-TACTICAL-2-RAIL-MOUNTING-SYSTEM-FOR-ADD-ON-SCOPE-RING-4-LASER-FLASHLIGHT-/190718225195?pt=LH_DefaultDomain_0&hash=item2c67b12b2b
Sine I bought this part loose and unmarked or not boxed off a table at the gun show I did some digging online to find it. (I thought it was one of those made in China no name deals.)
Well, at least it's a made in China named deal.
NcStar Adaptor is the best search. I think they list it as 30 mm but its 1.25"
It should be tough enough though. :p
If anybody can find a better fit or a rail this short anywhere made in the USA please let us know. :blink:
Can't wait to get this together and try.
http://i1093.photobucket.com/albums/i430/kruzan2/IMG_0522.jpg
But here is a similar (but looks heavier duty) part I found at MW for $50
http://www.midwayusa.com/product/572714/badger-ordnance-30mm-max-50-picatinny-style-ring-top-with-angled-picatinny-style-accessory-rail-matte?cm_vc=1734BrandGreatestProd
Kruzan, that's brilliant.
I saw a monopod attached to the QD point on a magpul stock recently. I thought that was an interesting method, although it didn't seem as robust as this is.
Can't wait to get this together and try.
Curious to hear your results. I'm less than satisfied with my STR mod even after modifying the mount by using aluminum bar stock as a backing plate. The Magpul stock does not lock up tight enough on the RE and this results in too much horizontal movement.
A traditional sand or media filled rear bag works much better.
The use of a monopod does not always help as much with horizontal stability depending on the type in my experience - for example the somewhat wobbly attachment to a sling swivel stud that I have on my 5.56 only gives more flexibility or quicker adjustment than a sand bag or helps more with vertical stability. That said I think that this design will be a more ridged setup and help more in that area and should be closer to the experience of using this on a PRS?
http://i1093.photobucket.com/albums/i430/kruzan2/th_IMG_0514.jpg (http://s1093.photobucket.com/albums/i430/kruzan2/?action=view¤t=IMG_0514.jpg)
This build is taking longer and costing more than I thought. I could have just purchased a LWRC REPER off the shelf for what I am ending up with in just cost on parts here. Finding them in stock and getting what you want is tough. I have given up on the piston upper and decided I will likely be better off, but should have more of a snipers 16” (mid-length) carbine finished next month and at the range for a test.
The use of a monopod does not always help as much with horizontal stability depending on the type in my experience - for example the somewhat wobbly attachment to a sling swivel stud that I have on my 5.56 only gives more flexibility or quicker adjustment than a sand bag or helps more with vertical stability. That said I think that this design will be a more ridged setup and help more in that area and should be closer to the experience of using this on a PRS?
http://i1093.photobucket.com/albums/i430/kruzan2/th_IMG_0514.jpg (http://s1093.photobucket.com/albums/i430/kruzan2/?action=view¤t=IMG_0514.jpg)
This build is taking longer and costing more than I thought. I could have just purchased a LWRC REPER off the shelf for what I am ending up with in just cost on parts here. Finding them in stock and getting what you want is tough. I have given up on the piston upper and decided I will likely be better off, but should have more of a snipers 16” (rifle length) carbine finished next month and at the range for a test.
Sorry, I meant STR stock. The PRS works much better with regard to sability. The STR has a friction lock but this is not enough to mitigate the axial flex/horizontal movement between the stock and RE.
trackmagic
09-24-12, 12:05
That's pretty cool. Do you use bipods up front so you have 3 points of support? You would not be influencing the rifle at all.
What do you use for bipods?
I just put the stock on the tube and now see what you are saying. There appears to be about 1/8" of total swing at the attachment point. The challange will be to keep that quiet. If you put a slight downward force perhaps it won't be an issue. Still an improvement over most attachments. I also have the atlas bipod for up front and a three point stand. I like the challange as opposed to just using a vise or rack from the bench.:D
I have this stock on my LMT MWS and this definately looks interesting. Nice job. I am going to wait until the finished product is on the rifle and working before I make a move. Great job though.
I now have the lower complete with the installation and arrival of the trigger. When the stock is fully collapsed there is some or a little back and forth or rotational play. However when the ACS stock is extended to the first thru last position and the stock lock down set, the play is gone and it is solid on the tube. I can therefore conclude this should be a solid set up on the monopod with the stock extended and locked.
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