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AR15.COM
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3/5/2007 7:24:23 PM EDT
Hi IM new to ARs i carry FNs but i bought a m4 with a full stock i want to put a 6 pos. collapable on it .do i have to change any of my springs or buffers if it doesnt come with it.or can i us the ones in it. thank you
3/5/2007 7:28:13 PM EDT
[#1]
If you have a full size M16A2/A4 with the A2 Buttstock, you're going to have to purchase a carbine buffer tube, buffer and spring.  The buffer tube should come with a castle nut and end plate.  Then you can put your M4 collapsible on it.  

This should work:

www.bravocompanyusa.com/Stag-Arms-M4-Stock-p/stock%20m4%20stag%20arms.htm
3/5/2007 9:44:45 PM EDT
[#2]
ok thank you i guess ill just buy one with it all included from command arms there are 2 models one has all the stuff other doesnt the cbst
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