Quarter Circle 10 SBR.

[Rooskibar03]

Well I got it all together, sorta. The rail kit from Aero I bought isn't compatible with my upper. I really like the side charging handle so I'll likely need to shop around for a rail that fits. Mounted the barrel nut and attached the supressor and it functions like a champ.

Who has the best supply of rails around? I need to test fit to find one that will work.

http://i1382.photobucket.com/albums/ah253/Rooskibar03/92cf69914039e21e4b6c65b57848c667_zpsqwtvq05t.jpg

[Great-Kazoo]

Damage factory had a wall display of them, last time down there. What seems to be the issue with fitment? I have a take off from my JRC carbine, think it will bolt up w/out issue.

[Rooskibar03]

Because of the shape of the uppers side charging handle it doesn't allow the rail to come forward enough to sit flush and then attach to the barrel nut. If I took a dremel to the upper I could make it fit, but I don't think I want to grind on $200 rail.

I really like both pieces but if I had to choose I like the side charger better.

http://i1382.photobucket.com/albums/ah253/Rooskibar03/AD53D020-F84F-4CE6-85CD-713E133C6EEB_zpseswolobn.jpg (http://s1382.photobucket.com/user/Rooskibar03/media/AD53D020-F84F-4CE6-85CD-713E133C6EEB_zpseswolobn.jpg.html)

[ray1970]

I say find the rail you know you like and modify it and enjoy.

But that's just me.

[Danimal]

Deleted

[Rooskibar03]

Went another direction with the rail. Turned out ok.

http://i1382.photobucket.com/albums/ah253/Rooskibar03/d672a8f6d21ac3b37666fe0176db375f_zps0bkyd5ti.jpg

[Monky]

Is that a hello kitty selector?

I been wanting to do a QC10.. how much did you end up spending minus that thing on the end?

[Rooskibar03]

Seekins precision switch.

More than planned.

250 on the lower.
250 for the upper
230 for the BGC
190 for the barrel
I spurged on the rail, 230.

Then add misc for LPK and furniture and less we not forget $200 to Uncle Sam for the privilege of the 5.5" barrel.

After all that I'm still tempted to build a 45 version. Would come out about the same a Kriss and don't have to worry about proprietary design.

[izzy]

Why oh why did you show me these? One of these in .45 is something I'm going to have to spend money on! Do they deliver quickly? From what I hear I only have so long to SBR on my trust. I've never built and AR before would you say this is a bad idea for a first timer?

[Rooskibar03]

45 lowers are in stock right now. I had mine and few days and filed the paperwork the next.

Figured I had at least 90 days to gather the parts. (Was a little over 100).

Its as easy as putting together an AR lower and that was pretty smooth sailing after watching a
few you tube videos. The upper is cake. It's blowback operation so no gas block or tube to mess with, just insert barrel and screw it down.

[izzy]

Rooski, thank you for introducing me to these. I've been thinking about an SBR AR pattern in .45 for quite a while. I can't wait to get started.

[Great-Kazoo]

Rooski, thank you for introducing me to these. I've been thinking about an SBR AR pattern in .45 for quite a while. I can't wait to get started.

You should do a search for Mad Machinist. he's doing s a nice DI 45. Supposedly deals with a lot of th eissues regarding buffer weight & spring OAL. The reviews are favorable too.

I have a DDLES 9mm set up and a JRC carbine caliber change. From 9 - 45.

[RonMexico]

http://www.thefirearmblog.com/blog/2015/06/25/new-frontier-armory-9mm-glock-ar-lower-sneak-peak/
https://newfrontierarmory.com/product-category/ar-9-lower-receivers/

damagefactory.com is on the wait list for these bad boys!