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7/6/2025 3:06:57 PM EDT
[#1]
Quote History
Originally Posted By Bravo_Six:
I noticed that the factory optic mount rail on my gun is slightly wobbly, despite the screws being torqued down pretty tight.  I've never used a claw mount before.  Is a little wobble normal for these mounts?
View Quote

Personally I think the MKE mounts are garbage.  Pretty much any of the Chinese ones on Amazon are better.

I had the same issue with the mount, screws ended up stripping, had to cut the mount off the gun.  Be careful!
Support the Firearms Policy Coalition and help save the Second Amendment: https://www.firearmspolicy.org
7/6/2025 4:34:20 PM EDT
[#2]
Quote History
Originally Posted By Bravo_Six:
I noticed that the factory optic mount rail on my gun is slightly wobbly, despite the screws being torqued down pretty tight.  I've never used a claw mount before.  Is a little wobble normal for these mounts?
View Quote
Definitely should not wobble.  Those MKE mounts are not known for being great quality.  It's also possible the flats for the clamp points on the receiver are not ground down properly, but that's less common.
7/6/2025 7:13:59 PM EDT
[#3]
Quote History
Originally Posted By Findsman:

Personally I think the MKE mounts are garbage.  Pretty much any of the Chinese ones on Amazon are better.

I had the same issue with the mount, screws ended up stripping, had to cut the mount off the gun.  Be careful!
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By Findsman:
Originally Posted By Bravo_Six:
I noticed that the factory optic mount rail on my gun is slightly wobbly, despite the screws being torqued down pretty tight.  I've never used a claw mount before.  Is a little wobble normal for these mounts?

Personally I think the MKE mounts are garbage.  Pretty much any of the Chinese ones on Amazon are better.

I had the same issue with the mount, screws ended up stripping, had to cut the mount off the gun.  Be careful!



Originally Posted By D_Man:
Originally Posted By Bravo_Six:
I noticed that the factory optic mount rail on my gun is slightly wobbly, despite the screws being torqued down pretty tight.  I've never used a claw mount before.  Is a little wobble normal for these mounts?
Definitely should not wobble.  Those MKE mounts are not known for being great quality.  It's also possible the flats for the clamp points on the receiver are not ground down properly, but that's less common.


Thanks, guys.  I guess I will buy a new mount.  I'm really regretting buying this thing.  It's been pretty pricey to set up for such a shitty shooter.
7/7/2025 1:18:12 AM EDT
[#4]
Quote History
Originally Posted By Bravo_Six:
Thanks, guys.  I guess I will buy a new mount.  I'm really regretting buying this thing.  It's been pretty pricey to set up for such a shitty shooter.
View Quote

Is the AP53 your first HK rodeo?  Things used to be a lot worse.  

Short mount for ten bucks that replaced the one on my AP5-SD

Longer version for fifteen that I put on my AP53

Midwest Ind rail mount for $68, similar in design to the MKE OEM but without the shitty quality

UTG Pro low-profile mount for $65 that's probably the best of any of the mounts and still made in the USA

I haven't broken the Chinese ones yet but I don't LARP very hard with them.  I have one of the old school B&T universal mounts on my first PTR but honestly I like the Chinese ones better, ha.  Kinda my plan to run them until they break to see how they hold up.  The UTG Pro is what I'd go with if I wanted to skip that nonsense and pay a little more upfront.  Just wish Amazon had it so I could get it next day!
Support the Firearms Policy Coalition and help save the Second Amendment: https://www.firearmspolicy.org
7/7/2025 8:01:52 AM EDT
[#5]
I have the UTG Pro mount on my AP5SD, and it is solid.
7/7/2025 8:40:31 AM EDT
[#6]
Quote History
Originally Posted By Findsman:

Is the AP53 your first HK rodeo?  Things used to be a lot worse.  

Short mount for ten bucks that replaced the one on my AP5-SD

Longer version for fifteen that I put on my AP53

Midwest Ind rail mount for $68, similar in design to the MKE OEM but without the shitty quality

UTG Pro low-profile mount for $65 that's probably the best of any of the mounts and still made in the USA

I haven't broken the Chinese ones yet but I don't LARP very hard with them.  I have one of the old school B&T universal mounts on my first PTR but honestly I like the Chinese ones better, ha.  Kinda my plan to run them until they break to see how they hold up.  The UTG Pro is what I'd go with if I wanted to skip that nonsense and pay a little more upfront.  Just wish Amazon had it so I could get it next day!
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By Findsman:
Originally Posted By Bravo_Six:
Thanks, guys.  I guess I will buy a new mount.  I'm really regretting buying this thing.  It's been pretty pricey to set up for such a shitty shooter.

Is the AP53 your first HK rodeo?  Things used to be a lot worse.  

Short mount for ten bucks that replaced the one on my AP5-SD

Longer version for fifteen that I put on my AP53

Midwest Ind rail mount for $68, similar in design to the MKE OEM but without the shitty quality

UTG Pro low-profile mount for $65 that's probably the best of any of the mounts and still made in the USA

I haven't broken the Chinese ones yet but I don't LARP very hard with them.  I have one of the old school B&T universal mounts on my first PTR but honestly I like the Chinese ones better, ha.  Kinda my plan to run them until they break to see how they hold up.  The UTG Pro is what I'd go with if I wanted to skip that nonsense and pay a little more upfront.  Just wish Amazon had it so I could get it next day!


Thank you!

And yes, this is my first (and last) HK rodeo.  

Originally Posted By triode:
I have the UTG Pro mount on my AP5SD, and it is solid.


This will probably be the route I go.  Thanks
7/7/2025 8:44:16 AM EDT
[#7]
Quote History
Originally Posted By triode:
I have the UTG Pro mount on my AP5SD, and it is solid.
View Quote


I have these mounts on my SP5 and SP5K. They are great low profile mounts.

Per the UTG instagram page they made adjustments to the mounts so they will fit HK91 and HK93 rifles now and are starting to ship the updated design to distributors. I’ll wait a bit and buy some for my AP53 and AP51.

7/7/2025 3:31:47 PM EDT
[#8]
I tossed the mount that came with my AP53 in the parts bin. It seemed janky, so didn’t even try it. Installed an MFI low profile mount and it’s been solid with an Aimpoint comp M2. Held zero for about 500 rounds and two 2gun matches so far. Very happy with it.
7/7/2025 8:27:28 PM EDT
[#9]
On my second MFI low profile mount. Easy to mount and solid holding an Aimpoint Pro.
7/7/2025 11:24:29 PM EDT
[#10]
Quote History
Originally Posted By Bravo_Six:


Thank you!

And yes, this is my first (and last) HK rodeo.  



This will probably be the route I go.  Thanks
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By Bravo_Six:
Originally Posted By Findsman:
Originally Posted By Bravo_Six:
Thanks, guys.  I guess I will buy a new mount.  I'm really regretting buying this thing.  It's been pretty pricey to set up for such a shitty shooter.

Is the AP53 your first HK rodeo?  Things used to be a lot worse.  

Short mount for ten bucks that replaced the one on my AP5-SD

Longer version for fifteen that I put on my AP53

Midwest Ind rail mount for $68, similar in design to the MKE OEM but without the shitty quality

UTG Pro low-profile mount for $65 that's probably the best of any of the mounts and still made in the USA

I haven't broken the Chinese ones yet but I don't LARP very hard with them.  I have one of the old school B&T universal mounts on my first PTR but honestly I like the Chinese ones better, ha.  Kinda my plan to run them until they break to see how they hold up.  The UTG Pro is what I'd go with if I wanted to skip that nonsense and pay a little more upfront.  Just wish Amazon had it so I could get it next day!


Thank you!

And yes, this is my first (and last) HK rodeo.  

Originally Posted By triode:
I have the UTG Pro mount on my AP5SD, and it is solid.


This will probably be the route I go.  Thanks



@Bravo_Six

Attached File
1(800)kbi 4cat

Montani Semper Libre

Qoute : FCSD - Hold up! I could have tip toed around here with just my hand covering my ass, instead of jamming my thumb in my asshole? Y'all motherfuckers need a user manual or something.
7/7/2025 11:31:50 PM EDT
[#11]
Quote History
Just make sure it's the new version that will work on the rifle caliber guns.  The original one will only mount to MP5 type guns, it has to do with where the recoil lug is on the top spine of the gun between the different models.  

https://www.instagram.com/p/DKk9_w7yVoB/?utm_source=ig_web_copy_link&igsh=MzRlODBiNWFlZA==
7/8/2025 7:53:07 AM EDT
[#12]
Thanks, guys!

7/9/2025 9:03:41 AM EDT
[#13]
I had/have the older version of the UTG rail on my C93 and on a PTR91 I no longer own.

It was solid on both rifles. I was pleasantly surprised, especially at the price point. I imagine the newer UTG rails are better. I'd certainly give them a look.
"All planes close up tight . . .we'll have to ditch unless landfall . . .when the first plane drops below 10 gallons, we all go down together."
7/11/2025 1:41:34 PM EDT
[#14]
Quote History
Originally Posted By Findsman:

Personally I think the MKE mounts are garbage.  Pretty much any of the Chinese ones on Amazon are better.

I had the same issue with the mount, screws ended up stripping, had to cut the mount off the gun.  Be careful!
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By Findsman:
Originally Posted By Bravo_Six:
I noticed that the factory optic mount rail on my gun is slightly wobbly, despite the screws being torqued down pretty tight.  I've never used a claw mount before.  Is a little wobble normal for these mounts?

Personally I think the MKE mounts are garbage.  Pretty much any of the Chinese ones on Amazon are better.

I had the same issue with the mount, screws ended up stripping, had to cut the mount off the gun.  Be careful!


I flipped 2 of the little connectors upside down and 2 right side up and it took care of the wobble and its rock solid.
7/12/2025 10:30:38 AM EDT
[#15]
Those of you putting MP5 stocks on and SBRing, are you putting pneumatic buffered stocks on? Is that little rubber pad that's on the 9mm stocks enough of a buffer for a 5.56 gun?

Excuse my ignorance. I'm not a roller lock guy. Thanks in advance.
7/12/2025 11:14:10 AM EDT
[#16]
Quote History
Originally Posted By scrolledandtabbed:
Those of you putting MP5 stocks on and SBRing, are you putting pneumatic buffered stocks on? Is that little rubber pad that's on the 9mm stocks enough of a buffer for a 5.56 gun?

Excuse my ignorance. I'm not a roller lock guy. Thanks in advance.
View Quote
Nobody should be putting MP5 stocks on the rifle caliber guns.  The rubber buffer for the 9mm guns is not sufficient.  You need the stocks or at least the end cap parts with the right buffer type.
7/13/2025 2:25:16 PM EDT
[#17]
Quote History
Originally Posted By scrolledandtabbed:
Those of you putting MP5 stocks on and SBRing, are you putting pneumatic buffered stocks on? Is that little rubber pad that's on the 9mm stocks enough of a buffer for a 5.56 gun?

Excuse my ignorance. I'm not a roller lock guy. Thanks in advance.
View Quote


The stocks that we are putting on are made specifically for the 33/53 series. While they look similar externally they are different internally.
“Firearm springs sometimes are made to be air soluble.” CSM Woods
7/14/2025 9:04:58 PM EDT
[#18]
A 91 stock will fit the end cap that came on your 53.   No messing with different recoil springs or worrying about buffers
7/22/2025 8:52:22 PM EDT
[#19]
Has anyone converted an AP53 to 300blk yet?
7/25/2025 9:13:05 PM EDT
[#20]
Quote History
Originally Posted By Trunkmonkey4:
Has anyone converted an AP53 to 300blk yet?
View Quote


Someone in here was working on it. Can’t remember who though.
“Firearm springs sometimes are made to be air soluble.” CSM Woods
8/13/2025 11:19:13 PM EDT
[#21]
Still wanting the 12.5 & 16 barrel versions.  Let's make this happen!
8/15/2025 5:07:24 PM EDT
[#22]
Quote History
Originally Posted By 0351:
Still wanting the 12.5 & 16 barrel versions.  Let's make this happen!
View Quote

Agreed.

I’m considering a 53, but would convert to 300blk.

I’d much rather have a 33k in 556.




Any updates Century/Atlantic?
8/15/2025 11:03:09 PM EDT
[#23]
Quote History
Originally Posted By 0351:
Still wanting the 12.5 & 16 barrel versions.  Let's make this happen!
View Quote

Same. I’m a buyer if we get a 16” and would maybe buy a 12.5” but I’m not interested in anything shorter.
If you aren't representing Jesus in a way that makes people want to hang out with you, you're doing it wrong.
8/18/2025 6:25:32 PM EDT
[#24]
I want to put the longer MP5 stock on my ap53. Does anyone have a solid source? or link. Thx.
8/18/2025 8:10:21 PM EDT
[#25]
Quote History
Originally Posted By LuvThmGuns:
I want to put the longer MP5 stock on my ap53. Does anyone have a solid source? or link. Thx.
View Quote
What "longer MP5 stock"?

Most MP5 stocks will not have a provision for the needed buffer for the 5.56 gun.
8/18/2025 8:39:23 PM EDT
[Last Edit: LuvThmGuns][Edited] [#26]
Im looking for the longer handguard not a longer stock.
8/19/2025 6:56:33 AM EDT
[Last Edit: HKH][Edited] [#27]
Quote History
Originally Posted By LuvThmGuns:
Im looking for the longer handguard not a longer stock.
View Quote

You mean this one?



9 left in stock

Click me 58.99
8/19/2025 6:57:00 AM EDT
[Last Edit: cherenkov][Edited] [#28]
Quote History
Originally Posted By D_Man:
What "longer MP5 stock"?

Most MP5 stocks will not have a provision for the needed buffer for the 5.56 gun.
View Quote

HK did make a "universal" retractable stock, its longer for use on MP5/MP5-40 and 53  It has a cutout for BHO feature on the left side.  I have one and it is more comfortable on am MP5 for those of use with long arms.
8/19/2025 7:58:55 PM EDT
[#29]
Quote History
Originally Posted By HKH:

You mean this one?

https://www.ar15.com/media/mediaFiles/99571/IMG_4388-3472082.jpg

9 left in stock

Click me 58.99
View Quote



HKH - Thank you very much. Thats what i was looking for
8/21/2025 9:46:53 PM EDT
[#30]
Atlantic has polymer G3 mags in stock.  https://atlanticfirearms.com/mke-g3-magazine-2-pack
8/21/2025 10:08:31 PM EDT
[#31]
Quote History
Originally Posted By HKH:

You mean this one?

https://www.ar15.com/media/mediaFiles/99571/IMG_4388-3472082.jpg

9 left in stock

Click me 58.99
View Quote


DANKE!
8/24/2025 9:13:38 AM EDT
[Last Edit: ChickenDaddy][Edited] [#32]
Are most people’s AP53 reliably operating with metal mags?  Thinking id like to try a few


8/28/2025 11:01:33 AM EDT
[#33]
Quote History
Originally Posted By ChickenDaddy:
Are most people’s AP53 reliably operating with metal mags?  Thinking id like to try a few
View Quote


I have 1 German steel mag and it works fine (as do the turk mags and the AC Unity mags).  Mine has been 100% reliable with any mag and ammo combo I throw at it.
8/28/2025 5:52:12 PM EDT
[#34]
Quote History
Originally Posted By ChickenDaddy:
Are most people’s AP53 reliably operating with metal mags?  Thinking id like to try a few
View Quote


I have two metal 30rd HK mags and two metal 30rd MKE mags. Both have been flawless. Same with some surplus 40rd aluminum mags. All have a little bit of wobble, but it doesn’t appear to affect function.
8/28/2025 11:14:57 PM EDT
[#35]
Some of the metal MKE mags have to be downloaded by one round to seat on a closed bolt.
9/27/2025 3:51:42 PM EDT
[#36]
I was impressed with the UTG Pro HK claw mount and wanted it on my AP51 & AP53. UTG updated their mount to fit on these rifles and I picked up the updated model at RTG Gun Parts.

Just wanted to share that RTG had the newest model.
9/28/2025 1:11:19 AM EDT
[#37]
Quote History
Originally Posted By 0351:
Still wanting the 12.5 & 16 barrel versions.  Let's make this happen!
View Quote


2026?
10/10/2025 12:07:55 PM EDT
[#38]
MKE HK33 A3 stocks on sale for $199.99 at Atlantic.
https://atlanticfirearms.com/MKE-HK33-Retractable-Buttstock
“I don’t want a valuable life lesson, I just want an ice cream.”
Space Corps Directive 196156: 'Any officer caught sniffing the saddle of the exercise bicycle in the women's gym will be discharged without trial.'
10/11/2025 10:09:32 AM EDT
[#39]
ATLANTIC FIREARMS.COM
10/25/2025 1:57:35 AM EDT
[#40]
Need some help here, I went to install a surefire 4p on my AP53. I had already purchased a KAK Tapered collar.  Well it's way too thick. Between the collar and the concave washer surefire wants on there, there's like maybe .3 inches of threads left.  

The 4p isn't threaded to the end, so I don't think there's enough thread engagement.  To be honest I'm not sure how that collar works for any muzzle device unless it's threaded to the end of the device.

Thought about just using the concave washer against the taper but I don't trust that either.

Anyone else put a surefire on theirs?

I know another guy was selling a collar but I can't find a current listing.

10/26/2025 12:29:10 AM EDT
[#41]
Quote History
Originally Posted By dtw13:
Need some help here, I went to install a surefire 4p on my AP53. I had already purchased a KAK Tapered collar.  Well it's way too thick. Between the collar and the concave washer surefire wants on there, there's like maybe .3 inches of threads left.  

The 4p isn't threaded to the end, so I don't think there's enough thread engagement.  To be honest I'm not sure how that collar works for any muzzle device unless it's threaded to the end of the device.

Thought about just using the concave washer against the taper but I don't trust that either.

Anyone else put a surefire on theirs?

I know another guy was selling a collar but I can't find a current listing.

View Quote

There's a guy on HKPRO (Kerensky, I believe) selling collars for these, not sure if same person you had in mind. https://www.hkpro.com/threads/kerenskys-ap53-taper-adapter-solution.584912/?post_id=4265576#post-4265576
10/26/2025 1:48:12 AM EDT
[#42]
Quote History
Originally Posted By xtremegibs:

There's a guy on HKPRO (Kerensky, I believe) selling collars for these, not sure if same person you had in mind. https://www.hkpro.com/threads/kerenskys-ap53-taper-adapter-solution.584912/?post_id=4265576#post-4265576
View Quote


Thanks, that's the guy I was looking for, his seem like the entire threads pass through as it indexes of the triple frame.  I sent him a PM on HKPro.  Been a member there since 2010 but don't post. I apparently now can't view the marketplace over there.

Hopefully he responds.

thanks for your help
11/16/2025 12:38:50 AM EDT
[#43]
You're welcome! Sorry, I don't come on here as often as I'm on HKPRO. He's pretty responsive there and if he sees you post on his thread he will likely reach out to you. Let me know if you need me to PM him for you to connect you guys. I got two collars from him, solid seller.
11/16/2025 3:46:51 PM EDT
[Last Edit: HKH][Edited] [#44]
Hey dude

I bought a tapered collar from him (the guy on hkpro)I went with a machined stainless version later.  Let me look and see if I can find his in the parts bin.

It’s yours for feee if I can find it.  I’m at church pretty much all day but I’ll get back to you tonight (hopefully).
11/19/2025 2:55:27 AM EDT
[#45]
@dtw13

Shoot me your address, this is yours if you want it.
It’s not the KAK but the one from HKPRO.
11/19/2025 8:57:50 PM EDT
[#46]
Quote History
Originally Posted By HKH:
@dtw13

Shoot me your address, this is yours if you want it.
It’s not the KAK but the one from HKPRO.
https://www.ar15.com/media/mediaFiles/99571/IMG_8067-3661456.jpg
View Quote


That is really generous of you. I just sent you a PM.

11/22/2025 8:36:48 PM EDT
[#47]
Quote History
Originally Posted By HKH:
@dtw13

Shoot me your address, this is yours if you want it.
It’s not the KAK but the one from HKPRO.
https://www.ar15.com/media/mediaFiles/99571/IMG_8067-3661456.jpg
View Quote

I love seeing kindness like this on the forum and in the 2A community. Legend.
11/25/2025 10:28:19 PM EDT
[#48]
A braced AP53 would be kinda cool
"The villainy you teach me, I will execute, and it shall go hard but I will better the instruction"
11/25/2025 10:48:41 PM EDT
[#49]
Quote History
Originally Posted By cyclone:
A braced AP53 would be kinda cool
View Quote


Heresy



11/26/2025 12:40:29 AM EDT
[#50]
Quote History
Which stock did you use?

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