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Posted: 9/13/2014 5:20:06 PM EDT
I am interested in making a side charging upper.  I know I can drill and tap a BCG and thread charger into that, however, does anyone know if cutting the slot into a forged receiver (extending from ejection port) will compromise the structural integrity of the upper? I know it can be done with a billet upper, but I hate to cut on an expensive upper.
Link Posted: 9/13/2014 5:58:29 PM EDT
[#1]
Southern Gun Company in the UK claimed they went to their own uppers b/c they found cutting a slot in standard uppers adversely affected them.  It's an advertising claim, so take it for what it's worth.
Link Posted: 9/13/2014 8:44:48 PM EDT
[#2]
My local smith, whom I trust 99.8% of the time, said it must be a billet upper. It just seemed like a charging handle on the side would only need to extend rearward to about the forward assist hole and I don't see that weakening it too much. I guess it would be better to play it safe and go with a billet as opposed to risking a KABOOM in my face...
Link Posted: 9/13/2014 9:30:19 PM EDT
[#3]
Unlikely it would cause a kaboom.  But the flexing might lead to accuracy problems, or possible jams.
Link Posted: 9/13/2014 10:41:41 PM EDT
[#4]
I am hard core...about forward charging handles. I just don't care for the stock AR setup. I still have some but oh well. Here are a few experiments and some final versions.

My first attempt was on my 308. Drilling and tapping the bolt carrier is really hard to do. Not a project for the inexperienced.


This one has remote operation of the stock charging handle.



I changed the upper to a tall one and ran the rod directly in the upper over where the stock charging handle would be with a smaller piece that substitutes for the CH.



This one was made on a upper that originally hand a handle, I cut that off milled a slot on top and the rod pushes on a piece that has a fin that sticks up. It is all hidden by the rail cap that houses the carbon rod.

Link Posted: 9/14/2014 3:23:51 AM EDT
[#5]
You, sir, are a genius.  I really don't want to shoot your .308", however.
Link Posted: 9/15/2014 6:55:23 PM EDT
[#6]
Very cool work!

Discussion ForumsJump to Quoted PostQuote History
Quoted:
I am hard core...about forward charging handles. I just don't care for the stock AR setup. I still have some but oh well. Here are a few experiments and some final versions.

My first attempt was on my 308. Drilling and tapping the bolt carrier is really hard to do. Not a project for the inexperienced.
<a href="http://s146.photobucket.com/user/908ssp/media/machinework/_1012511_zps52a6eccc.jpg.html" target="_blank">http://i146.photobucket.com/albums/r245/908ssp/machinework/_1012511_zps52a6eccc.jpg</a>

This one has remote operation of the stock charging handle.

<a href="http://s146.photobucket.com/user/908ssp/media/machinework/_1012506_zpsbfbf4944.jpg.html" target="_blank">http://i146.photobucket.com/albums/r245/908ssp/machinework/_1012506_zpsbfbf4944.jpg</a>

I changed the upper to a tall one and ran the rod directly in the upper over where the stock charging handle would be with a smaller piece that substitutes for the CH.

<a href="http://s146.photobucket.com/user/908ssp/media/machinework/_1012543_zps55923337.jpg.html" target="_blank">http://i146.photobucket.com/albums/r245/908ssp/machinework/_1012543_zps55923337.jpg</a>

This one was made on a upper that originally hand a handle, I cut that off milled a slot on top and the rod pushes on a piece that has a fin that sticks up. It is all hidden by the rail cap that houses the carbon rod.

<a href="http://s146.photobucket.com/user/908ssp/media/machinework/_1012534_zps18630843.jpg.html" target="_blank">http://i146.photobucket.com/albums/r245/908ssp/machinework/_1012534_zps18630843.jpg</a>
View Quote

Link Posted: 9/15/2014 10:58:35 PM EDT
[#7]
Thank you.  Why would not want to shoot the 308? I have another one at 14 pounds bi-pod or rest but this one I can shoot from my shoulder being under 9 pounds and it really doesn't kick enough to be a bother.

I wanted to put an Adams Pistons system on it but it works fine the way it is. I am going to change the scope on day.
Link Posted: 9/15/2014 11:00:30 PM EDT
[#8]
Discussion ForumsJump to Quoted PostQuote History
Quoted:  Thank you.  Why would not want to shoot the 308? I have another one at 14 pounds bi-pod or rest but this one I can shoot from my shoulder being under 9 pounds and it really doesn't kick enough to be a bother.

I wanted to put an Adams Pistons system on it but it works fine the way it is. I am going to change the scope on day.
View Quote


Ah, @ 9 lbs I wouldn't mind shooting it.  W/ all that carbon fiber on it I thought perhaps you'd gone much lighter.
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