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1/23/2016 5:24:54 PM EDT
To all you boys who have the M203 that attaches to the bottom rail of your weapon.... How many inches of rail space would I need? Would 7 inches be enough to mount the rail mounted M203 version?

If not any suggestions? I have a 7 inch lower rail. Is there a rail extension that would work to mount on the 7 inch rail to add rail space? ? ?

Thanks, just doing some research before I take the time to get the stamp and go out and buy one.
1/23/2016 8:44:33 PM EDT
[#1]
1/24/2016 6:56:05 PM EDT
[#2]
Would a bottom rail like this withstand the recoil of the M203, the rail is just screwed in...? Or scrap trying to put a M203 on a rifle like this using just the bottom rail?  I tried contacting the manufacturer of the rails but am not sure if they would even know... This is not my weapon but it is the same one I have.

Attached File
1/25/2016 12:30:56 PM EDT
[#3]
My understanding is that the rail mount M203s are very hard on rail systems.  They are known to break aluminum free-float tubes.
1/25/2016 7:10:55 PM EDT
[#4]
I would not do it... GROG
1/25/2016 8:03:41 PM EDT
[#5]
Would there be anyway I could mount it to this rifle?
1/26/2016 1:05:36 PM EDT
[#6]
Where there is enough $ and skill, there's always a way. Know a good machinist? You could probably come up with a custom mount that attached to both the side rails and the bottom rail. IIRC the receiver of the m17 is 7075. I'm not a materials expert or engineer, but it seems like a mount could be fashioned / attached to the receiver somehow.

All of that said, in its current condition / configuration, I definitely wouldn't fire a rail mount 203 attached to that lower rail.
1/30/2016 4:48:34 PM EDT
[#7]
I contacted an armorer about this and he said that he thinks he can make me a mount that could possibly work. Its going to cost but I think it would look pretty cool. Ill keep you guys updated on what happens.
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