AR-9

[dial1911]

I don't have any experience with the QC10 lower, but I do like the looks of the NFA dedicated Glock mag lower I've got- of course, it's still sitting in a box, untouched. I have no idea if the thing works or not- but the machining and finish look very good.

I built my AR9 with a 4" barrel. Started off with a 10.5" PSA upper. Swapped the barrel out for a 4" shortly after that- the 10.5" is just short enough to require a stamp, but too long with a can on it. The 4" is a good length.

 

[AtlMedic]

Yeah, I suppose. Do your thing.

-1 vote for anything PSA
-1 vote for magwell blocks
-1 vote for colt style mags
-1 vote for a barrel longer than 5" lol

I'm with you on the first three. What is the downside of a barrel over 5"?

 

[Leshaire]

I'm with you on the first three. What is the downside of a barrel over 5"?

Its not doing you any justice after 5". I mean with no can and needing to hold the thing I guess you dont have much of an option.

 

[AtlMedic]

Its not doing you any justice after 5". I mean with no can and needing to hold the thing I guess you dont have much of an option.

I think I could work with something like this (not the colt mag). I guess I'll aim for a 4 or 5" barrel. I hadn't factored a flash hider into it either so that would give me a little wiggle room.

 

[Leshaire]

I think I could work with something like this (not the colt mag). I guess I'll aim for a 4 or 5" barrel. I hadn't factored a flash hider into it either so that would give me a little wiggle room.
View attachment 27075

That thing is freaking slick. I wish I had that lower lol

 

[Willy Leadwell]

Yeah, I suppose. Do your thing.

-1 vote for anything PSA
-1 vote for magwell blocks
-1 vote for colt style mags
-1 vote for a barrel longer than 5" lol

I agree with all of this except the colt mags. I love my colt mags. That said, the only issue I've had with mine was due to some shitty ASC mags. I just hate the stupid angle of the dangle with the Glock mags.

 

[Willy Leadwell]

QC10 Colt mag lower with a Cross Machine Tool upper. I highly recommend them as well. 5.5" barrel. The fit and finish on this thing is like nothing I've ever seen. I figured if I'm gonna stamp it I'm married to it and spent a few more dollars.

 

[AtlMedic]

I agree with all of this except the colt mags. I love my colt mags. That said, the only issue I've had with mine was due to some shitty ASC mags. I just hate the stupid angle of the dangle with the Glock mags.

I just don't want to have to worry about stocking another type of mag. This way I can stick with glock and AR mags only. Two calibers and two types of mags will make things simpler

 

[Laufen]

Well, now I feel obligated to post a picture.

7.5" barrel..it works fine. Subs will still be sub.

 

[Willy Leadwell]

If you plan to suppress it and/or run some type of captured buffer/spring setup like a JP in the future, just make sure the bolt carrier you get has the removable center section to accommodate the rod in the captured setup.

I wasn't aware of that when I started my build, but I lucked out. Had I bought something like a PSA bcg it wouldn't have worked.

 

[Cudruln]

New Frontier armory dedicated glock mag lower. ~4" barrel give or take. Soon the be a sbr. Had minimal issues so far, the biggest one is the bcg binding up going into the buffer, meaning I need to shoot it more. Other than that it suppresses great and is an absolute blast to shoot.

 

[Righter13]

@Cudruln the BCG is binding on what exactly?

 

[Cudruln]

@Cudruln the BCG is binding on what exactly?

From the best I can tell the start of the buffer tube, it is very sporadic.

 

[Righter13]

From the best I can tell the start of the buffer tube, it is very sporadic.

Post pics of it if you can.

 

[Cudruln]

Post pics of it if you can.

I shall try tonight

 

[Allsmiles]

I currently have an AR9 that is full sized that I built. Upper is PSA 16" w/15" rail and hybrid bolt (Glock or Colt mags). Lower was built off a RunnerRunnerGuns Glock 9mm pattern. It has an ACT trigger with JP yellow springs in it. Buffer tube has 8oz buffer and 308 carbine spring. Magpul CTR stock and a Glock mag holder grip (haven't tried it yet like this). Topped off with a Vortex Spitfire and an AAC TiRant45 can. Runs like a top and have not had a FTF or FTE with it shooting both 115 and 147gr ammo both with and without the can. Fun range gun when suppressed and always get a grin out of anyone who shoots it. Heavy buffer and 308 spring help with recoil and keeping gas out of your face.

If I do another one and SBR, I would only change the upper setup and go with short Ballistic Advantage barrel and tuck can under handguard.

 

[boss_hawg]

i went with a removeable mag block (hanh precision). i like colt mags; glock mags look dumb and insert at a weird angle.

the hanh is pricey but i can convert to 5.56 or another caliber in about 60 seconds. this lower pulls double duty on an 11.5" 5.56 sbr.

i got a good deal on a 6.5" barrel and it works with my hand guard even with no can attached. it keeps 147gr sub sonic.

either this or my suppressed 10/22 is my favorite range toy.

my ar9 has been 100% reliable with the exception of washougal river cartridge co ammo - which was the most under-powered stuff i've ever shot. i guess they were saving on powder to offer such a cheap price.

i would much rather have a true rifle round for a defensive use.

 

[KGmade]

Check out angstadt arms too. We have been running the hell out of ours.

Also, @TruPrep has a receiver set in stock

 

[AtlMedic]

Check out angstadt arms too. We have been running the hell out of ours.

Also, @TruPrep has a receiver set in stock

I did see that they had that. I'm going to check it out next time I'm there.

 

[KGmade]

I did see that they had that. I'm going to check it out next time I'm there.

They arent the cheapest, but they run well