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AR9 - 9MM pistols/sbr
Thinking of a AR Pistol/SBR in 9mm.
What is the consensus on these? Pre-built? or build on from scratch?
Any particular manufactures to go with?
Deplorable millennial born 30 years too late
I have done a good bit of R&D and T&E for manufacturers. 6 Factory guns, a few prototypes and 7 that I built myself. IMHO, the Nordic and JP are the closest ready to go, but they still need work. FM Products is another one that makes great systems. Slap their 8.5" on a QC10 lower with a POF trigger and you probably have about the best available right now.
ALL of my personal 9mmARs have the 3.5# POF flat trigger and FM bolts. 9mm blowbacks are a bit violent and they are know to tear up bolts and triggers if they are not properly set-up. The FM bolt has the proper geometry, AR15 style extractor and is properly ramped. The POF has rubber bumpers, fits tight and has locked hammer and trigger pins in a cartridge. It does the best at spreading out the force over the two holes so the hammer pin hole does not get hogged out or break.
Buffers are the other area to be careful. JP flatwire spring (223 for powder puffs, 308 for defense power) with a .308 carbine buffer and a delrin plug cut for overtravel just about 3/8" past the bolt latch. That will allow the bolt latch to last and give the best operation. If you want to spend more, blitzkrieg 9mm hydraulic buffer is the hot ticket. I have both systems and the Blitz is the best, but pricey.
Personally, since no-one has a totally dialed in system, you can do better building today.
If you want to shoot mine, let me know. I have several and you can try suppressed, unsuppressed. Compare them to a KelTec, 16" version, even a 10mm DI PCC.
I've got two... one a carbine and the other a pistol. Used the JoeBob Outfitters Spartan 9mm upper n lower with Kaw Valley parts and a hiperfire trigger... so far uber reliable, but I'm just pushing plinking ammo thru them...
USAF - 1989-2011
I recommend QC10 from personal experience. Never had an issue with any of my 9mm AR's even though I've read a lot about how unreliable they can be.
Lessons cost money. Good ones cost lots. -Tony Beets
What about a Scorpion EVO 9mm over an AR 9mm?
Deplorable millennial born 30 years too late
The Scorpion has not fared as well as the SIG MPX, and both have proprietary (expensive) parts. They both have a higher failure rate among competitors running them hard than the AR9s. If you want a cheap plinker, a KelTec Sub2000 might be worth a look, but the wise advice has been to avoid the Scorpion and MPX at least until they get Gen2s out.Originally Posted by electronman1729
The Scorpion is one of the most reliable of the PCCs. Their mags suck and the triggers get so full of carbon they have to be cleaned every 500-1000 rounds religiously. There is a 3rd gen mag that is much stronger. I haven't had the chance to beat the new mag up yet, but the gun will run ammo that will make a Glock puke. The aftermarket parts for the Scorpion are cheap and so are the OEM parts. They are proprietary, but not even close to expensive.
The MPX is on it's second upgrade of it's second generation. They currently dominate PCC competition, period. They are expensive, but untouchable for flat fast shooting. The current MPXs are more reliable than any of the AR-9s, but you have to change the factory trigger right out of the gate. The first gens sucked.
AR9's break just as much as any other pcc. They are violent direct blow-back guns getting ran on the edge for competition and they break gas keys, extractors, buffers, and triggers. Outside of competition use, you can up the reciprocation mass and go to less complicated buffers and stop a lot of the failures. I've seen so many of the AR-9 lowers with janky specs, I simply won't recommend anything but JP or QC10. They both work.
The Sub-2000 is hella cheap, uber reliable, and fucking awful to shoot. It's like getting punched in the face every trigger pull.
For the MPX and AR-9s, the Hiperfire 24 series triggers dominate hands down.
Mom's comin' 'round to put it back the way it ought to be.
Anyone that thinks war is good is ignorant. Anyone that thinks war isn't needed is stupid.
ROFL
Glad to hear about the Scorpion as I just got one.
They currently dominate PCC competition, period.Max, Tim, Scott, and Todd all shoot AR9s, Brian just went from an MPX to an AR9. So that leaves only Taran in the top 5 of the last two Championships with an MPX. Don't let your hate for me lead you to again give errant advice.
Todd Jarrett shoots an MPX. Took a class with him two weeks ago.
Please go away. You are the problem, not the solution.
Mom's comin' 'round to put it back the way it ought to be.
Anyone that thinks war is good is ignorant. Anyone that thinks war isn't needed is stupid.
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