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9/22/2017 12:11:25 AM
Posted: 8/20/2005 8:40:26 PM EDT
I just got a AAC can and after 4 months of waiting on paperwork the f-ing thing will not fit any of my RRAs
It will fit a colt so I borrowed a upper so i can try the darn thing out
the adaptor goes over the barrel about a inch
colts are .690 RRA is .720
I prefer bushmaster barrels for the $$
and will probably pick up a BM if it will fit
thanks for your time I appeciate it
Link Posted: 8/21/2005 6:43:35 AM EDT

Originally Posted By www-glock19-com:
The adaptor goes over the barrel about a inch.



Why does it overlap the barrel itself behind the threads? Is it a QD model? My thread-mount SRT Hurricane just tightens up flush to the barrel's shoulder.
Link Posted: 8/21/2005 10:08:51 AM EDT
yeah its a QD m4-2000 and it has a sleeve that goes back over the barrel
Link Posted: 8/21/2005 10:15:32 AM EDT
[Last Edit: 8/21/2005 10:19:03 AM EDT by Skartissue]
An old bushy upper that I have sitting here measures 0.700".

It happens to be a post-ban bbl, btw.

EDIT - my new'ish 16" bushmaster M4 profile no-ban bbl measures in at 0.698"
Link Posted: 8/21/2005 11:50:12 AM EDT
would it not be different for the different barrel profiles?

­

different barrel profiles will yield different thickness
Link Posted: 8/21/2005 3:36:04 PM EDT
thanks Skartissue
from what I have seen except between pencil barrels and others
most barrels are the same dia at that spot within a manufacturer
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