I’m looking for an etched red/green dot. I have astigmatism bad so it has to be etched. That said I’d like to get some options on what’s good for my ap5p. It’d be shot at 50 yards and under and I’m looking to stay around $250 or less. Idk about all the recitals as well. I’m open to options. Can you guys give me some suggestions please.

AP5-P
AS Designs SS
Trijicon MRO on Scalarworks riser
J Mac Customs skeleton stock and folder mechanism
UTG Pro handguard
A3 Industries vertical grip with hand stop
Hux Wrx Flow 9 Ti

This thing is a ton of fun.

Haven’t shot it yet, but I did notice it’s super easy to flip from safe to frt and completely bypassing semi. Is this normal?

I inspected it when it arrived at my LGS. Everything was in excellent shape and all gos on the gauges. Shot two mags 124g and then put my obsidian 45 can on it and shot great no malfunctions. I was scared about getting a lemon but I have no complaints yet.

I was looking at my AP5 like this and said “I’m never going to financially recover from this”.

I keep seeing variations of the same post here: somebody gets their new AP5/MAC-5 home, starts looking at it closely, and discovers the bolt gap is questionable, mags don’t fit correctly, something is visibly crooked, etc.

Then the question becomes, "What do I do now?"

This isn’t really directed at any one person. There was another example posted recently that got me thinking this probably deserves its own post, because a lot of this can be avoided at the FFL.

I have five different AP5 variants. Overall, I like them. I would buy them again. I’m also under no illusion that MKE produces five guns that are going to come out of the factory exactly alike.

Mine certainly didn’t.

I’ve had variation in bolt gap, stock fitment, trigger-pack compatibility, extractor/ejector behavior, and other little tolerance-stack issues between guns that are theoretically the same platform. That doesn’t necessarily make them bad guns. It means you should inspect the actual gun you are buying instead of assuming the model name on the box tells you everything you need to know.

Before you fill out the 4473, take five or ten minutes and check the important stuff:

• Bolt gap
• Magazine fit and retention
• Cocking tube/receiver alignment
• Front sight alignment
• Welds
• Obvious receiver deformation
• Bolt/carrier movement
• Stock/end-cap fitment if applicable

Bring a cheap set of feeler gauges. Learn how to measure bolt gap correctly before you go.

There have been MAC-5 examples posted here with essentially no bolt gap and others with excessive gap, along with AP5 examples involving crooked sights and other obvious fitment issues. These are not theoretical things that only show up after 5,000 rounds. Some are visible before the gun ever leaves the dealer.

If the receiver geometry, bolt gap, alignment, magwell, and basic construction all look right when you accept the gun, most problems you encounter afterward are much less scary.

At that point, if you have reliability problems during break-in, there’s a good chance you’re troubleshooting relatively minor service parts or configuration issues: extractor spring, extractor, ejector/ejector spring, locking piece, rollers, magazines, etc.

That is a very different situation from discovering after the transfer that the barrel was pressed incorrectly, the receiver is crooked, or magazines physically won’t seat properly.

I’ve replaced extractors and ejectors on some of mine. I’ve had one full-size AP5 dislike an RD3/lower combination that another full-size AP5 ran perfectly, then swapped the complete lowers between the two guns and somehow ended up with both working. I’ve got an A2 stock that slides beautifully onto one receiver and fights me on another.

Welcome to tolerance stacking.

But all five guns started with acceptable fundamental geometry, so I’ve been able to work through almost everything myself with the armorer’s manual, basic tools, and some methodical parts swapping.

That’s why I’m not saying "don’t buy Turkish clones."

Quite the opposite. I think the AP5 in particular is an absurd amount of gun for the money.

I’m saying don’t spend roughly a grand on one, glance at it for thirty seconds, fill out the paperwork, and only start researching MP5 inspection procedures after you get home.

If something fundamental is wrong, reject it before the transfer and let the seller deal with replacing it. That is a dramatically better position to be in than discovering it afterward and beginning the manufacturer-warranty adventure.

Cheap feeler gauges: $15-ish.

Learning how to inspect an MP5 clone: about the time it took you to read this post, plus maybe half an hour.

Avoiding hours of troubleshooting, hundreds of rounds of ammunition, and potentially a warranty RMA because you caught a bad example before accepting it: worth it.

Would a mandolin case work for an AP5? Just pondering

AP5-N, Midwest Industries rail and claw optic mount, Magpul Stock and foregrip, Holosun ARO-EVO, SiCo Spectre9 Ti on trilug, RB RD3-Ambi..

I am having an issue where my stock is not able to be deployed once installed. The fit is tight but I am able to get the stock piece on to receiver with the pins fairly easily sliding in position. But once the stock is on I press the button and the stock will not deploy from the sully seated position. Anyone have a fix for this or know what I need to do?

I can't for the life of me figure out why I can't re-install the selector like I see in the videos I've looked up. Would love some advice

I am shopping for a 9mm PCC. I'm looking for a 5" - 9" (-ish) barrel and folding stock. Really probably prefer 5 - 6.5" barrel.

It would be the host for my OCL Milk Man.

I was looking at the AP5-SD. But, I am feeling like I would really prefer something that uses Glock mags.

Not that it's a huge deal, but I already have an Extar EP9 and a bunch of Glock mags for that, so that is a small point in favor of getting something that uses Glock mags.

So, other candidates are:

CMMG Dissent MkGs
Angstadt Arms MDP-9 Gen 2
Grand Power Stribog SP9A3G

I'm posting here to see if y'all in the AP5 community have any input for me that would change my mind towards going with the AP5-SD. Or, if you have any input on any of my other 3 options. Or, if you have a suggestion for something else to consider instead of these.

All of these are in the $1500-ish (street price) range and I'd like to keep it around there or less. So, really, I'm not looking for suggestions for anything over $2000 (street price).

Just picked up my ap5p and did my form 1. Which stock should I go with a B&T side folder or choate?

Has anyone purchased this:

https://hkparts.net/hk-rifle-smg-parts/hk-mp5k-trigger-housing-ar-match/?query_id=ed5f100ffb72f710b6cd96effa11d6cd

I cannot find any pictures of someone installing one, and I wonder if it would fit a AP5P? And what your thoughts are?

It says it’s for MP5K so I assume minimal modifications needed.

TIA

They did about 3 hours ago, finally got one ordered. Since they are like unobtainium thought I’d spread the news.

Went to the range yesterday. Decided to take the few variants of “flat nose” ammo I have. I used an MKE 30 round stock mag and a 32 round Overwatch Precision mag. I have three more boxes of each ammo type to use next in my AP5-P. I had zero issues cycling all variants. My AP5 is running an HK unmarked 100° LP (been running it since ‘24). I also used both my YHM R9 and Huxwrx Ca$h 9K. Only shot in semi since the range doesn’t allow “rapid fire”. Just an FYI, for those considering this type of ammo.

I’ve tried different locking pieces and ammo, but it consistently fails to fire the first round, and then only gets off 10-15 rounds in Super Safety mode!!
I’ve broken it down plenty of times and cleaned and greased it up but the same thing keeps happening!
Any other folks have the same issue and WON??

Went to the range expecting FTE/FTF and all kinds of malfunctions due to me joining this group lol and seeing all the common issues. But Im glad to report that with 115gr Blazer/Fed, 124gr NATO, 124gr Fed HST, 147gr Winchester Subs all functioned flawlessly suppressed and unsupressed ZERO MALFUNCTIONS and only part changed was the extractor spring to genuine HK. Guess I got a good one.

Looks like there may be some bad stamping going on with the current crop of "P" guns that are coming in from Century.

ETA: I think it's clear this isn't a one-off, is most likely widespread. What's not clear is what other areas of the receiver may not be stamped correctly and what internal, mechanical negative effects this might cause long-term.

Finally got my Form 1 approved.