May have posted this originally in the wrong Forum Topic so decided to give it a try here. Sorry for the dbl post in 2 diff. topics-

Hi all. Am interested in a 9mm build and have been searching the board for info, as well as the Archive. Unfortunately have not run across the info I was looking for (my search fu must be weak). Like the Ace pistol ext. tube but there is another that has appeared with some frequency in the photos of builds. It appears to be much shorter than the Ace and has what appears to be a screw-on cap on the end of extension tube. Anyone know the make? How does it compare to the Ace as far as functionality? Other worthy options?
One more question- who has the shortened bolt carriers? Checked Bushmaster but didn't run across it. TIA.

Model1 sales sell it and Bushmaster is coming out with their own version.  The Model1 doesn't run reliably from everything I've read (unless you cut down a 1911 spring and it wears that out quickly too).  The Bushmaster setup is a whole 'nother animal.

Thanks Sandboxmedic. Guess I'll wait for the Bushmaster version. Bushmaster was a little light on description of their AR Pistol parts on their website (other than the Carbon15 ). Don't read very favorably of Model 1 sales so that looks like a  no-go. So do you know if this will be a complete kit for a 9mm conversion? Thanks.

223 pistol buffer tube with original AR recoil spring cut to 6" and buffer cut to 1" OAL.  Functions just fine, even full auto.

http://www.semiautosten.com/hosted/ccw.jpg

model 1 sales.  BTW - you can also use a CAR buffer tube.  Someone around here posted an ATF letter saying that it was okay.

Thanks guys. Appreciate all of the input. It's definitely developmental stage, looking for  the pluses and minuses and all help certainly appreciated.

tag