Author Topic: Anyone here with a 9MM AR15? I'm thinking of building one.  (Read 933 times)

0 Members and 1 Guest are viewing this topic.

Offline bang bang

  • Hero Member
  • *****
  • Posts: 2088
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #15 on: January 29, 2018, 01:39:21 AM »
i got an OAK9.

But for your requirements you will be limited to the Colt system.

good luck on your build.  I say buy once cry once. 

but they are a hoot to shoot.


Offline M1A4ME

  • Hero Member
  • *****
  • Posts: 3359
  • I've shot the rest, I now own the best - CZ
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #16 on: January 29, 2018, 08:33:29 PM »
Got some stuff in today (Spikes lower, KAK shockwave and tube, lower parts kit, hammer and trigger, magpul pistol grip with oil bottle insert, magpul back up sights, three ASC 32 round magazines, etc.).

Put the lower together, mostly, but not completely.  Left the carbine buffer spring and two potential buffers in the garage.  Oh, and the dual sling attachment piece that goes on the buffer tube.  I think I ordered a castle nut, but it didn't come it today.  I need to go back and look the orders over to make sure.

Oh, if you order a Spikes 9MM lower it has a bunch of the small parts already installed.  Not just the bolt catch and bolt release that are easy to see in the pictures on the internet, but also the front/rear takedown pins, springs, detents for them, the mag release/parts.  So the only parts I used from the lower parts kit was the safety spring/detent and safety, and the buffer retaining pin/spring.  The trigger pins came with the hammer and trigger I ordered (BCM nickel/Teflon coated) came with the pins.

Still, sort of, looks cool with a magazine sticking out of it.

Took pictures, I'll get them in here tomorrow when I have more time to organize stuff and pick out the most in focus pictures of the bunch.
Better to have it and not need it, than to need it and not have it.  So, if you see me walking the dogs with my SIG 556R, its okay.

Offline M1A4ME

  • Hero Member
  • *****
  • Posts: 3359
  • I've shot the rest, I now own the best - CZ
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #17 on: January 30, 2018, 08:12:38 PM »
Receiver, Spikes Tactical 9MM, Colt magazine style.  Comes with everything but the trigger/hammer/springs/pins, safety/detent/spring, buffer retaining detent and spring.



The ejector looks to be held in by a screw.  So it should be easy to change if I ever need to do so.



The rear takedown pin detent and spring also seem to be held in by another screw.



I did a magazine (ASC 32 round) insertion and drop test with all 3 magazines.  They were all easy to insert/lock in and drop free.



Ambidextrous safety.  The 45 degree model.  Works fine now.  Need to remember to loctite the screw once I'm done with putting the rest of the parts on and before the first range trip.



The Armaspec lower parts kit (minus a trigger/hammer assembly).



The BCM trigger kit.  The trigger isn't light, but it's very "smooth."  I still haven't checked the pull weight yet.



Did you ever hear the "rule" that any tool dropped to the floor when working on a car rolls to the center of the car?  I dropped the sear while removing the trigger pin and it went (almost) to the center of the kitchen table.  I had to laugh as I was stretching to reach it.  Oh, pay no attention to the cat toy, they're like kids, they play till something else catches their attention and then leave the toys where they dropped them.



Everything installed.



Safety in the FIRE position.



KAK brace and tube (the tube has little identions in it to allow the set screw to lock it in place.  Got one of those "grippy" Magpul pistol grips and the oiler bottle insert.



My little oiler bottle made from one of those printer ink refill kits.  That long stainless steel tube makes it easy to get back into hard to reach/tight places and leave a drip of Mobil 1.


Better to have it and not need it, than to need it and not have it.  So, if you see me walking the dogs with my SIG 556R, its okay.

Offline Hemiscorpius lepturus

  • Jr. Member
  • **
  • Posts: 64
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #18 on: January 31, 2018, 05:24:01 AM »
The rear takedown pin spring setscrew is extremely convenient, moreso if you swap extension tubes with uppers to go between rifle/pistol combination, makes the job several times faster.

It should be a #4-40 x 1/8" size, and you need to trim the spring a bit or it wont compress enough for the detent to clear the pin. The spring is trimmed to just stick out maybe 1mm, then the setscrew is installed flush.

That was the setscew I was waiting for on my build, installed it last night, i used a 316 stainless setscrew from boltdepot.com

Offline M1A4ME

  • Hero Member
  • *****
  • Posts: 3359
  • I've shot the rest, I now own the best - CZ
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #19 on: January 31, 2018, 08:39:34 AM »
Got the tracking info on some more stuff.  Should be able to finish getting the lower together tomorrow or Friday.  Probably tomorrow, I'm sort of impatient.  That is, if the parts do arrive tomorrow.

Between my impatience and my memory, I'll probably find myself grabbing some shoes and a pistol and running out to the garage to get the carbine spring and buffers since I go out there two to three times a day and keep forgetting to bring that stuff in then.
Better to have it and not need it, than to need it and not have it.  So, if you see me walking the dogs with my SIG 556R, its okay.

Offline John A.

  • Hero Member
  • *****
  • Posts: 1578
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #20 on: January 31, 2018, 09:20:59 AM »
I don't blame you wanting to finish it.  I'm the same way with my projects.

I'll sometimes spend an astronomical amount of time researching and getting the parts I want (and the cheapest places I can find them).  And then to be sitting on the porch waiting for the mail woman to come.

Then I'll sneak down into Frankenstein's lair and will emerge later with a new creation in hand.

I truly enjoy working on my guns.  If I keep doing it, I may even get good at it someday ;)
When people ignorant of guns make gun laws, you end up with ignorant gun laws.

Offline M1A4ME

  • Hero Member
  • *****
  • Posts: 3359
  • I've shot the rest, I now own the best - CZ
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #21 on: January 31, 2018, 02:11:22 PM »
Since I was going through the tool box looking for parts I didn't find I grabbed the trigger pull ga.

6.5 lbs., every time.  It just doesn't feel that heavy.  It's so slick.  The hammer "cams" rearward just a bit, the trigger tightens up, and you can stop/hold it at that point.  Then a small amount more effort and the hammer falls.
Better to have it and not need it, than to need it and not have it.  So, if you see me walking the dogs with my SIG 556R, its okay.

Offline M1A4ME

  • Hero Member
  • *****
  • Posts: 3359
  • I've shot the rest, I now own the best - CZ
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #22 on: January 31, 2018, 04:40:09 PM »
Well, spent some more time looking for the GII stock/buffer, etc. and didn't find it.

I did find a box with four slings and 3 new D&H 30 round AR15 magazines, so I still came out ahead.....
Better to have it and not need it, than to need it and not have it.  So, if you see me walking the dogs with my SIG 556R, its okay.

Offline M1A4ME

  • Hero Member
  • *****
  • Posts: 3359
  • I've shot the rest, I now own the best - CZ
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #23 on: February 01, 2018, 02:44:16 PM »
Well, got the Pametto State Armory upper today.

It appears the bottom of the bolt (that hits the top round in the magazine and pushes it into the chamber) won't clear the bullet guide bolted to the front/top of the lower receiver.  I can't get the receiver haves to close/lock.  I can push either the front or the back pin into place, but not both.  I can see marks on the bottom of the bolt where I keep trying to close the two halves together.

After lunch and the dog walk I'll sit down with the file, a stone, and/or the dremel and see if I can take a little bit of metal off the very center of the bullet guide so the bolt will clear it.  I don't want to remove any metal from the bottom of the bolt as it has to knock that top bullet out of the magazine and chamber it with that rail on the bottom of the bolt.  And the bolt is way more expensive to replace that the bullet guide.

I did check the bolt rearward travel with the spacer installed in the back of the buffer tube and the face of the bolt will go back past the back of the bolt stop by just over 1/8", but not a full 1/4".

Got the sights on the rail.  Got the Primary Arms advanced red dot on the rail (I wonder if the battery will really last 50,000 hrs.??)  Got the hand stop on the bottom of the free float tube.  Got the 2.5" rail on the side of the float tube for the light.  Almost done.  Maybe, just maybe, we can get to the range next week.

Pics when I get the thing to fit together.  I'll probably load a magazine up and try some manual feeding out by the garage before I take it to the range and find out it won't feed.  Better to know now than to wait till then.
Better to have it and not need it, than to need it and not have it.  So, if you see me walking the dogs with my SIG 556R, its okay.

Offline M1A4ME

  • Hero Member
  • *****
  • Posts: 3359
  • I've shot the rest, I now own the best - CZ
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #24 on: February 01, 2018, 07:32:28 PM »
As usual, I didn't even think about taking pictures.  I just grabbed up the parts and headed for the garage.  Tried filing the bullet guide, no luck.  Tried stoning it, didn't want to have to stay at it a day or two.  Grabbed the dremel and a cutting wheel and removed some metal.  Then I grabbed polishing kit and did some polishing of the area after metal removal the edges from the angled part of the guide to the newly created flat part of the guide (to allow the bolt to move without making contact.)

The two halves go together and the take down pins fully insert/lock just like they should.  The bolt no longer contacts the bullet guide.  The bolt freely moves to the rear, or forward, with no dragging/hanging.



I took a magazine outside, loaded 10 rounds in it, put the safety on SAFE, inserted a magazine and pointed it at the ground and, using the charging handle I manually cycled all 10 through it.  Then I reloaded the magazine and did it again.  It just might work when I get to the range.

Looks wicked.



Rear view showing the blade angled off to allow a solid contact with the back of my right forearm to help steady it better.



Man, I hope it shoots nice groups.

Edited to add - just one more thought, I think I want a flashcan on it like I have on the .223 pistols.  I don't expect an 8" barreled 9MM to be too awful loud (I'd think just about all the powder will be burned up in a barrel twice as long as the Cz 75's) but the flash can will make it less loud for me and more loud for anyone on the wrong end of it.  And, I think it looks cool, too.
« Last Edit: February 01, 2018, 07:37:43 PM by M1A4ME »
Better to have it and not need it, than to need it and not have it.  So, if you see me walking the dogs with my SIG 556R, its okay.

Offline John A.

  • Hero Member
  • *****
  • Posts: 1578
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #25 on: February 01, 2018, 07:56:40 PM »
It does look good.

If you get a flash can, make sure it has the right thread pitch obviously (some 9mm are 1/2-32 and some are 1/2-28).  And obviously make sure a 9mm bullet will pass through it.
When people ignorant of guns make gun laws, you end up with ignorant gun laws.

Offline M1A4ME

  • Hero Member
  • *****
  • Posts: 3359
  • I've shot the rest, I now own the best - CZ
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #26 on: February 01, 2018, 09:12:53 PM »
Different threads?  What's with that???

Thanks for the heads up.
Better to have it and not need it, than to need it and not have it.  So, if you see me walking the dogs with my SIG 556R, its okay.

Offline John A.

  • Hero Member
  • *****
  • Posts: 1578
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #27 on: February 01, 2018, 09:39:12 PM »
Back in the early 80's when Colt was introducing the 9mm AR15, Colt in their infinite wisdom (that is sarcasm) decided to use 1/2-32 thread barrels on their 9mm barrels so military armorers wouldn't inadvertently try to install a 223 M16 flash hider onto a 9mm barrel.  Which obviously would cause a problem if someone were to try to fit a 9mm bullet through a 22 caliber flash hider hole.

So, Colt used the 1/2-32 thread pitch as standard on their 9mm, and a lot of other companies followed suit.

Myself, I use 1/2-28 as standard and so do a lot of other people for 9mm.  I have enough common sense to make sure that I'm putting a 9mm muzzle device on a 9mm barrel.  Despite what the barrel threads are, but that's the short answer why there are different thread pitches for 9mm.

« Last Edit: February 01, 2018, 09:40:48 PM by John A. »
When people ignorant of guns make gun laws, you end up with ignorant gun laws.

Offline M1A4ME

  • Hero Member
  • *****
  • Posts: 3359
  • I've shot the rest, I now own the best - CZ
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #28 on: February 02, 2018, 06:30:51 AM »
Thanks for the info.  I was looking at KAK flash cans last night.  I believe they listed the threads they use.  I've just got to find out what threads my barrel uses.

Thanks again.
Better to have it and not need it, than to need it and not have it.  So, if you see me walking the dogs with my SIG 556R, its okay.

Offline Mccian

  • Full Member
  • ***
  • Posts: 140
Re: Anyone here with a 9MM AR15? I'm thinking of building one.
« Reply #29 on: February 02, 2018, 06:50:22 AM »
Great info in this thread, awesome looking piece..... nice job!
“Life doesn’t have to be perfect......to be good”

CZ 75 Omega Convertible
CZ P01 Compact Steel SKU#99041
CZ “CWC” Edition
CZ P-10C FDE...shared
Other......M&P Shield .45, Browning Buckmark .22 (wife’s, but I have to clean it)