9mm AR pistol build plans, your thoughts?

[Stainer]

So after many many hours drooling over everyone's 9mm AR's, I have decided it is time to build my own. I bought my first two AR's, and I want to build this one. I have done a lot of research and looked a lot of places for different parts. My intentions for this gun are that it will be a pistol to shoot and have fun with, and who knows, maybe it will have a couple of tax stamps added for a butt-stock and a suppressor. I would love to hear your questions, comments, and concerns on this build as this site has so much good information to offer from it's users. So here you go

ST-15 stripped rifle lower with safe/semi/auto bullet markings [STLS012] - $99.00 : Spikes Tactical

ST Lower Parts Kit (NOT Installed) [SLPK101] - $69.95 : Spikes Tactical

Spike's Tactical Pistol Buffer tube assembly [SLA500P-K] - $59.95 : Spikes Tactical

ST-9BS [SLA09BS] - $14.95 : Spikes Tactical

Hahn Magwell adapter for sten mags - 85.00
Sten 9mm Adapter

CMMG 9mm upper - 649.95
9mm 7.3" MedCon Upper w/Carbine Length 4 Rail (No Sights), www.cmmginc.comCMMG Inc. AR15 Rifles, Parts and Accessories. .22 LR Dedicated AR-15 Rifles, Dedicated AR 15 9mm Rifles and Uppers, Tactical Bacon


I'll worry about sights later on down the road as I will probably put some sort of optics on top. I'm choosing to with the sten adapter because I have seen that sten mags are much cheaper and easier to find. Your turn INGO, let's here it

 

[revsaxon]

My 9mm build was very similar to that, only I went with the spikes 9mm lower-block (I had a few of the 9mm colt mags already or I would have gone with a sten one), a bushmaster hammer, and a gemtec talon upper. I love it to death (waiting on stamp returns to put a butt-stock on it). Im sure someone more knowledge than I can chime in here, but I was told that normal 5.56 hammers won't work in a 9mm build and lead to horrific jams.

 

[dave29]

I was told that normal 5.56 hammers won't work in a 9mm build and lead to horrific jams.

Standard hammers work with the CMMG uppers. Although, make sure your LPK has a rounded hammer instead of a a notched hammer.

 

[Stainer]

The CMMG upper states to only use a 5.56 hammer, not to use a 9mm one. Thats another reason I went with it, this way I can change uppers without any other troubles.

 

[revsaxon]

Heh. I knew I should have checked the link before posting But besides for my gaff, it looks like a good set of parts.

 

[jd4320t]

The CMMG upper states to only use a 5.56 hammer, not to use a 9mm one. Thats another reason I went with it, this way I can change uppers without any other troubles.

Interesting. You have my attention

 

[malern28us]

So what would it be that makes the 9mm upper so expensive compared to others? I know Rock River makes a .40 call upper but they still have never responded to any of my inquiries as to what I need to do to my lower to make it work.

 

[ZbornacSVT]

What makes the upper able to work with regular hammers is the fact it is ramped.

I just picked up my ADCO BCG and Hahn mag block for my build.

 

[dave29]

What makes the upper able to work with regular hammers is the fact it is ramped.

I just picked up my ADCO BCG and Hahn mag block for my build.

From what I understand, yes.

 

[ZbornacSVT]

From what I understand, yes.

I wasn't asking, I was sharing.

 

[rem338um]

make it nfa

Yes they look cool and sounds like a good idea but,,Put a butt stock on it and make it an SBR...or just use your Glock w a 30 rnd clip in it... to get the same results. They are very awkward to hold and shoot accurately..

 

[jd4320t]

Yes they look cool and sounds like a good idea but,,Put a butt stock on it and make it an SBR...or just use your Glock w a 30 rnd clip in it... to get the same results. They are very awkward to hold and shoot accurately..

I thought it was a good idea till I got mine...

Either way you have to wait so why not shoot it as a pistol for a while?

 

[dave29]

I wasn't asking, I was sharing.

I'll go back to sleep now.

 

[Stainer]

Either way you have to wait so why not shoot it as a pistol for a while?

Exactly why I am going this route.

 

[Stainer]

Does anyone else have any information on these parts? Good, bad, ugly?