i have an colt plastic coated aluminumn stock that came off of a xm177e2, when i tried to put it on a buffer tybe that i had it would not fit, so i tried 2 others and none of them fit. did colt make a non standard size buffer tube? and if so where the heck do i order one from....jason marsella

Milspec tubes are the same as the Colt tubes.  MSTN has four position milspec tubes for $50.

would  a DPMS buffer be mill spec? if so any ideas why it wont fit my colt collapsable stock ?

[red]guys still looking for an answer to this question. i have tried several buffers and none of them fit the colt stock. any suggestions...jason [/red]

I dunno; my two carbine buffers both fit my aftermarket, and my Colt tubes. Inner diameters are the same, or supposed to be at any rate.



Edited to Add:  Yup; just checked my two buffers. Exactly the same for both the Colt and the aftermarket piece.  Only difference is that the new aftermarkat pieces has the rear plug retained by a split pin, and the early Colt unit used a series of grooves inside the tube to retain the plug.

When the Vltor Modstocks came out I recall one of the threads discussing that it was designed to fit the Colt/Military carbine tubes and that the Bushmaster, RRA, et. al. tubes were slightly bigger and didn't work.