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AP53 SBR (Page 2 of 4)

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3/13/2026 8:00:24 PM EDT
[#1]
Originally Posted By USMC_JA:
Am I too late to the party?

https://i.imgur.com/6ZpQTQY.jpeg
View Quote

Originally Posted By USMC_JA:


Thanks.  Yeah. I am aware of the rit dye.  But Im weird.  I kind of like the mismatch.  And if anything, I'd like to try to dye the foreend "HK green" than vice versa.

https://i.imgur.com/V2GjR82.jpeg
View Quote


Looks good to me
TEAM GIMMICK 2026
3/14/2026 11:57:02 AM EDT
[#2]
Quote History
Originally Posted By southerncross:


Probably going to dye the G91 stock I have coming black when it gets here.
View Quote


I’d read that the green G3 stocks wouldn’t take dye, so I just ended up rattle canning mine.
3/14/2026 12:01:59 PM EDT
[#3]
Quote History
Originally Posted By Damon_23:


I’d read that the green G3 stocks wouldn’t take dye, so I just ended up rattle canning mine.
View Quote


You know I'm not opposed to rattle can paint jobs
TEAM GIMMICK 2026
3/14/2026 7:15:26 PM EDT
[#4]
Quote History
Originally Posted By USMC_JA:


Thanks.  Yeah. I am aware of the rit dye.  But Im weird.  I kind of like the mismatch.  And if anything, I'd like to try to dye the foreend "HK green" than vice versa.

https://i.imgur.com/V2GjR82.jpeg
View Quote


This looks so F'n good, now I think I may need to order one.
3/14/2026 7:22:03 PM EDT
[#5]
Originally Posted By Lancelot:
Has anyone been able to SBR an AP53? If so what do you need in terms of the stock, recoil rod, etc.?


View Quote


Why would you? Throw a brace on it and call it a day. That is what I did.
3/14/2026 7:23:26 PM EDT
[#6]
Quote History
Originally Posted By Hulley:


This looks so F'n good, now I think I may need to order one.
View Quote


Go ahead and get in on this my dude.
TEAM GIMMICK 2026
3/14/2026 7:23:49 PM EDT
[#7]
Quote History
Originally Posted By FantasticPlastic:


Why would you? Throw a brace on it and call it a day. That is what I did.
View Quote


Because braces are lame?
TEAM GIMMICK 2026
3/14/2026 8:38:01 PM EDT
[#8]
Quote History
Originally Posted By southerncross:


Because braces are lame?
View Quote


Though there are some good looking braces for the 9mm roller delayed rifles, not really a lot for 556 and 762 stuff.
3/18/2026 6:07:54 PM EDT
[#9]
Quote History
Originally Posted By D_Man:
Unfortunately, can't dye something that's black other than making it more-black.
View Quote


I have not time for such pesky little details.
"Have a smile for breakfast, you'll be shitting joy by lunch.” - Joe Abercrombie
3/19/2026 10:46:50 PM EDT
[#10]
Just got mine finished.

The stamp took a little over a month and a half to come back approved. Took it into work and engraved it this morning.

Picked up the recoil rod assembly from HK parts, and the stock from Atlantic firearms. Took off the muzzle device and replaced it with a keymo one. Dyed the stock black, threw on the surefire handguard, and got a rail from UTG, which I was shocked to find out they're making in the USA now.

Attached File

3/19/2026 10:53:22 PM EDT
[#11]
Quote History
Originally Posted By markfall:
Just got mine finished.

The stamp took a little over a month and a half to come back approved. Took it into work and engraved it this morning.

Picked up the recoil rod assembly from HK parts, and the stock from Atlantic firearms. Took off the muzzle device and replaced it with a keymo one. Dyed the stock black, threw on the surefire handguard, and got a rail from UTG, which I was shocked to find out they're making in the USA now.

https://www.ar15.com/media/mediaFiles/142593/IMG_1132_jpeg-3732629.JPG
View Quote


Looking good. Guess it will be a while before my stamp comes back if others are taking 45 days.
TEAM GIMMICK 2026
3/20/2026 12:54:33 AM EDT
[#12]
Originally Posted By markfall:
Just got mine finished.

The stamp took a little over a month and a half to come back approved. Took it into work and engraved it this morning.

Picked up the recoil rod assembly from HK parts, and the stock from Atlantic firearms. Took off the muzzle device and replaced it with a keymo one. Dyed the stock black, threw on the surefire handguard, and got a rail from UTG, which I was shocked to find out they're making in the USA now.

https://www.ar15.com/media/mediaFiles/142593/IMG_1132_jpeg-3732629.JPG
View Quote



Goddamn that looks nice

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.
3/20/2026 7:06:59 AM EDT
[#13]
Quote History
Originally Posted By markfall:
Just got mine finished.

The stamp took a little over a month and a half to come back approved. Took it into work and engraved it this morning.

Picked up the recoil rod assembly from HK parts, and the stock from Atlantic firearms. Took off the muzzle device and replaced it with a keymo one. Dyed the stock black, threw on the surefire handguard, and got a rail from UTG, which I was shocked to find out they're making in the USA now.

https://www.ar15.com/media/mediaFiles/142593/IMG_1132_jpeg-3732629.JPG
View Quote


Looks awesome. What optic are you going to go with ?
3/20/2026 2:28:42 PM EDT
[#14]
Quote History
Originally Posted By markfall:
Just got mine finished.

The stamp took a little over a month and a half to come back approved. Took it into work and engraved it this morning.

Picked up the recoil rod assembly from HK parts, and the stock from Atlantic firearms. Took off the muzzle device and replaced it with a keymo one. Dyed the stock black, threw on the surefire handguard, and got a rail from UTG, which I was shocked to find out they're making in the USA now.

https://www.ar15.com/media/mediaFiles/142593/IMG_1132_jpeg-3732629.JPG
View Quote
That looks fantastic. I hadn't even thought of using a SF forend on mine. I wonder if it will work with a SF SOCOM suppressor unlike a 3 lug on an MP5.

This may well have just cost me a lot of money.
3/20/2026 2:40:28 PM EDT
[#15]
Quote History
Originally Posted By Damon_23:


Looks awesome. What optic are you going to go with ?
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By Damon_23:


Looks awesome. What optic are you going to go with ?

Originally Posted By Damon_23:


Looks awesome. What optic are you going to go with ?
I was thinking about an eotech, but it seems like a lot for what's essentially a range toy. They all are when you get down to it. I suppose I think that would give it the best look though, and I like that particular optic. We'll see.
3/20/2026 2:41:28 PM EDT
[Last Edit: markfall][Edited] [#16]
Quote History
Originally Posted By vanrichten:
That looks fantastic. I hadn't even thought of using a SF forend on mine. I wonder if it will work with a SF SOCOM suppressor unlike a 3 lug on an MP5.

This may well have just cost me a lot of money.
View Quote
I have a dead air Sandman on mine, and it fits just fine with the light. I'm using a Malkoff conversion head though, which is a bit smaller and allows it to fit.
3/23/2026 10:54:39 AM EDT
[Last Edit: heavyduty][Edited] [#17]
Stupidity deleted - need more coffee.
3/25/2026 9:50:23 PM EDT
[#18]
Sigh. I didn't get one earlier because the stock problem hadn't been sorted out. It's been sorted out now?

...maybe I need to order myself an...easter? gift...
"Oh, bother," said Pooh, as he pulled the pin on another grenade...
3/26/2026 12:33:51 AM EDT
[Last Edit: southerncross][Edited] [#19]
Quote History
Originally Posted By Evil_Ed:
Sigh. I didn't get one earlier because the stock problem hadn't been sorted out. It's been sorted out now?

...maybe I need to order myself an...easter? gift...
View Quote


Which stock problem? Fixed or collapsible? Fixed goes right one once you take the end cap off. Just 2 screws. The collapsibles they sell for the 53 work fine.
TEAM GIMMICK 2026
3/26/2026 7:01:12 AM EDT
[#20]
Quote History
Originally Posted By southerncross:


Which stock problem? Fixed or collapsible? Fixed goes right one once you take the end cap off. Just 2 screws. The collapsibles they sell for the 53 work fine.
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By southerncross:
Originally Posted By Evil_Ed:
Sigh. I didn't get one earlier because the stock problem hadn't been sorted out. It's been sorted out now?

...maybe I need to order myself an...easter? gift...


Which stock problem? Fixed or collapsible? Fixed goes right one once you take the end cap off. Just 2 screws. The collapsibles they sell for the 53 work fine.


When I was looking at them right after they came out, because they didn't use the normal HK53 setup, there were a lot of questions as to how to make it all actually work - if the genuine HK53 things would work with it without problems, etc. Supposedly MKE was going to make something specifically for it? Like I said, this was all when it first came out, more than a year ago.
"Oh, bother," said Pooh, as he pulled the pin on another grenade...
3/26/2026 2:54:56 PM EDT
[#21]
Quote History
Originally Posted By Evil_Ed:


When I was looking at them right after they came out, because they didn't use the normal HK53 setup, there were a lot of questions as to how to make it all actually work - if the genuine HK53 things would work with it without problems, etc. Supposedly MKE was going to make something specifically for it? Like I said, this was all when it first came out, more than a year ago.
View Quote


@Damon_23 is my answers guru. He'll get you set straight.
TEAM GIMMICK 2026
3/26/2026 5:14:48 PM EDT
[#22]
Quote History
Originally Posted By Evil_Ed:


When I was looking at them right after they came out, because they didn't use the normal HK53 setup, there were a lot of questions as to how to make it all actually work - if the genuine HK53 things would work with it without problems, etc. Supposedly MKE was going to make something specifically for it? Like I said, this was all when it first came out, more than a year ago.
View Quote


Correct. The AP53 is made a bit differently than an actual HK. They welded the recoil rod directly to the end cap, like how a G3 is. Not great for plug and play with aftermarket stocks.  Easy button is to just add a plastic G3 stock body to the factory end cap after you stamp it. If you wanna go with an HK33 collapsible stock, you need to also get a separate HK53 recoil rod assembly. It’ll just set against the new end cap like an MP5’s does. Works fine.
And on stocks, the AP53 uses a buffer less bolt carrier, so any stock you get for it need to be buffered. So MP5 stocks are off the table (the rubber buffered style won’t work).
I’ve ran mine with a G3 buffered end cap (cut down cap) in addition to the MKE hk33 style collapsible.
I’m happy to share anything I’ve learned and help in any way I can.


Just received a 3d printed light-bearing handguard from WTC arms. Made for the mp5, but fits the 53 fine.

Attached File
3/26/2026 8:53:37 PM EDT
[#23]
Quote History
Originally Posted By Damon_23:


Correct. The AP53 is made a bit differently than an actual HK. They welded the recoil rod directly to the end cap, like how a G3 is. Not great for plug and play with aftermarket stocks.  Easy button is to just add a plastic G3 stock body to the factory end cap after you stamp it. If you wanna go with an HK33 collapsible stock, you need to also get a separate HK53 recoil rod assembly. It’ll just set against the new end cap like an MP5’s does. Works fine.
And on stocks, the AP53 uses a buffer less bolt carrier, so any stock you get for it need to be buffered. So MP5 stocks are off the table (the rubber buffered style won’t work).
I’ve ran mine with a G3 buffered end cap (cut down cap) in addition to the MKE hk33 style collapsible.
I’m happy to share anything I’ve learned and help in any way I can.


Just received a 3d printed light-bearing handguard from WTC arms. Made for the mp5, but fits the 53 fine.

https://www.ar15.com/media/mediaFiles/113101/IMG_3326_jpeg-3736538.JPG
View Quote


At the time I don't think anyone had any HK53 recoil assemblies, something like that - so no one really tested it out...

Now to find an inexpensive source of HK33 stocks and an HK53 recoil spring/rod And I guess the "pistol" as well...years ago I bought a handful of HK93 mags just in case Zenith ever did import another batch of roller locked 556 guns
"Oh, bother," said Pooh, as he pulled the pin on another grenade...
3/26/2026 9:55:48 PM EDT
[#24]
Quote History
Originally Posted By Evil_Ed:


At the time I don't think anyone had any HK53 recoil assemblies, something like that - so no one really tested it out...

Now to find an inexpensive source of HK33 stocks and an HK53 recoil spring/rod And I guess the "pistol" as well...years ago I bought a handful of HK93 mags just in case Zenith ever did import another batch of roller locked 556 guns
View Quote


I got my G3 stock and butt pad from robertrtg for $20.

Hkparts.net has 53 recoil assemblies.
TEAM GIMMICK 2026
3/27/2026 9:29:32 AM EDT
[#25]
Quote History
Originally Posted By Damon_23:


Correct. The AP53 is made a bit differently than an actual HK. They welded the recoil rod directly to the end cap, like how a G3 is. Not great for plug and play with aftermarket stocks.  Easy button is to just add a plastic G3 stock body to the factory end cap after you stamp it. If you wanna go with an HK33 collapsible stock, you need to also get a separate HK53 recoil rod assembly. It’ll just set against the new end cap like an MP5’s does. Works fine.
And on stocks, the AP53 uses a buffer less bolt carrier, so any stock you get for it need to be buffered. So MP5 stocks are off the table (the rubber buffered style won’t work).
I’ve ran mine with a G3 buffered end cap (cut down cap) in addition to the MKE hk33 style collapsible.
I’m happy to share anything I’ve learned and help in any way I can.


Just received a 3d printed light-bearing handguard from WTC arms. Made for the mp5, but fits the 53 fine.

https://www.ar15.com/media/mediaFiles/113101/IMG_3326_jpeg-3736538.JPG
View Quote


How do you like the WTC handguard so far?  What light option did you use?
3/27/2026 11:32:43 AM EDT
[#26]
Quote History
Originally Posted By heavyduty:


How do you like the WTC handguard so far?  What light option did you use?
View Quote


Initial impressions are good. It feels like a 3d printed item though. Not super brittle, but I fear it wouldn’t do well if smashed into barricades a lot or subjected to rough use. I think I may have chipped the little tab that hooks into the receiver at the back when installing the light. Still seems to hold on tight though.
I cheaped out and ordered a knockoff surefire 300 series off Amazon to try out. To my surprise, it actually fit snugly into the front socket and works fine.
3/27/2026 2:27:12 PM EDT
[#27]
What's the general consensus on the AP53? I have seen several positive reviews, but there was also the one Dakota Tactical one where he was dogging on it and talking about all of its flaws.


3/27/2026 4:15:47 PM EDT
[#28]
I still haven't shot mine yet, but bolt gap checked out, fit and finish seems fine, and I don't have anything bad to say about quality from first impression. This isn't my first roller delayed rifle, though. I had a Century C93 many moons ago and it was less well put together than this AP53 seems to be.
TEAM GIMMICK 2026
3/27/2026 6:07:25 PM EDT
[#29]
Quote History
Originally Posted By Little_Bo_Peep:
What's the general consensus on the AP53? I have seen several positive reviews, but there was also the one Dakota Tactical one where he was dogging on it and talking about all of its flaws.


View Quote


I’ve had mine for a year now and it’s running great. Occasionally shoot it at local 2gun matches. No issues. In fact, now that I think about it, it’s been 100% reliable. Not a crazy high round count, but not a safe queen.

I’m not shocked that someone who sells custom built 53’s for $4400 would dislike a $1500 alternative.
3/29/2026 1:26:46 PM EDT
[#30]
Rezeroed the 53 today after an optic swap. Shooting it reminded me how much I love this thing.

Attached File
3/29/2026 8:58:35 PM EDT
[#31]
Well, I broke down and ordered one today, pretty excited as I've wanted one for a while now, can't wait to SBR this thing.
3/29/2026 8:58:51 PM EDT
[#32]
Quote History
Originally Posted By Damon_23:
Rezeroed the 53 today after an optic swap. Shooting it reminded me how much I love this thing.

https://www.ar15.com/media/mediaFiles/113101/IMG_3424_jpeg-3738115.JPG
View Quote


That looks badass!
3/29/2026 10:52:41 PM EDT
[#33]
Quote History
Originally Posted By Hulley:
Well, I broke down and ordered one today, pretty excited as I've wanted one for a while now, can't wait to SBR this thing.
View Quote

TEAM GIMMICK 2026
3/29/2026 11:29:47 PM EDT
[#34]
Quote History
Originally Posted By Hulley:
Well, I broke down and ordered one today, pretty excited as I've wanted one for a while now, can't wait to SBR this thing.
View Quote

3/30/2026 7:24:23 PM EDT
[#35]
Quote History
Originally Posted By Hulley:
Well, I broke down and ordered one today, pretty excited as I've wanted one for a while now, can't wait to SBR this thing.
View Quote


Congrats
4/1/2026 12:36:09 AM EDT
[Last Edit: markfall][Edited] [#36]
Pretty sure I'm done for now. Got an eotech on it to finish off.

Attached File

4/1/2026 10:24:20 AM EDT
[#37]
Quote History
Originally Posted By markfall:
Pretty sure I'm done for now. Got an eotech on it to finish off.

https://www.ar15.com/media/mediaFiles/142593/IMG_1253_jpeg-3739393.JPG
View Quote


Simply lovely.
Scepticism is an exercise, not a life; it is a discipline fit to purify the mind of prejudice and render it all the more apt, when the time comes, to believe and to act wisely. -- George Santayana

Never mistake a clear view for a short distance.
4/1/2026 3:07:52 PM EDT
[#38]
Quote History
Originally Posted By markfall:
Pretty sure I'm done for now. Got an eotech on it to finish off.

https://www.ar15.com/media/mediaFiles/142593/IMG_1253_jpeg-3739393.JPG
View Quote

I think that's the best looking setup yet.
4/1/2026 7:48:53 PM EDT
[#39]
I got the call, my AP53 is at the FFL and I'll pick it up in the morning!
4/2/2026 1:36:26 PM EDT
[#40]
And she's home.
Attached File
4/2/2026 1:55:15 PM EDT
[#41]
Quote History
Originally Posted By markfall:
I have a dead air Sandman on mine, and it fits just fine with the light. I'm using a Malkoff conversion head though, which is a bit smaller and allows it to fit.
View Quote
Well, I can say for sure that it doesn't work with the SF head and SF suppressor.  Just ordered a Malkoff head to see if that will work but it seems like even that will be close.  HK and SF REALLY don't want you to use these damn things with a suppressor.  On the MP5 or the 53.
4/2/2026 2:11:59 PM EDT
[#42]
The new lighted hand guard from MAC is supposed to address that.
4/3/2026 5:34:17 AM EDT
[#43]
Originally Posted By southerncross:


Because braces are lame?
View Quote


This is correct.
4/5/2026 11:35:53 AM EDT
[#44]
Mine just cleared, took about 7 weeks.

Is there a picatinny stock adapter that works with these?  Id like to put something other than the G3 fixed or HK style slider on


4/5/2026 11:41:50 AM EDT
[#45]
Quote History
Originally Posted By ChickenDaddy:
Mine just cleared, took about 7 weeks.

Is there a picatinny stock adapter that works with these?  Id like to put something other than the G3 fixed or HK style slider on
View Quote



I haven't seen one that works with the 53 because of the buffer situation. There may be something, though.
TEAM GIMMICK 2026
4/5/2026 12:16:24 PM EDT
[#46]
Happy Easter BTW.

Ok which one of these is the easiest best value to stock my AP53?

Im getting it engraved tomorrow

Attached File


4/5/2026 12:34:32 PM EDT
[#47]
Quote History
Originally Posted By ChickenDaddy:
Happy Easter BTW.

Ok which one of these is the easiest best value to stock my AP53?

Im getting it engraved tomorrow

https://www.ar15.com/media/mediaFiles/118342/IMG_5143_png-3741736.JPG
View Quote
For a fixed A2 stock, just get the plastic stock and buttpad parts (like lower left).

You can remove the black plastic "nub" that comes on the back of the metal end cap with the gun and replace that with the plastic stock.
4/5/2026 2:57:40 PM EDT
[Last Edit: ChickenDaddy][Edited] [#48]
Ok so the 8.95 piece from robert then scavenge the spring iff the one that came with my ap53

Thanks!


4/5/2026 4:03:34 PM EDT
[#49]
Quote History
Originally Posted By ChickenDaddy:
Ok so the 8.95 piece feom robert then scavenge the spring iff the one that came with my ap53

Thanks!
View Quote


The G3 stock body will bolt right into the end cap that shipped with the ap53. Just pop the little plastic cap off the rear and then bolt on the stock. Easy peasy
4/5/2026 4:17:46 PM EDT
[#50]
Quote History
Originally Posted By Damon_23:
Rezeroed the 53 today after an optic swap. Shooting it reminded me how much I love this thing.

https://www.ar15.com/media/mediaFiles/113101/IMG_3424_jpeg-3738115.JPG
View Quote


That is awesome!

My son is SBRing one. It will have a full-size polymer stock.
"An age of glory passed like a lightning flash. The mandate of heaven passed from you but you didn't see. Times change and power passes. It is the pity of the world."

Song dynasty poet

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AP53 SBR (Page 2 of 4)

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