This has been my experience as well.
I’m not an AK Tradionalist but I’m certainly not a member of the AK TactiCool group either. When I purchased my Saiga conversion from Krebs, my goal was for a quality, reliable rifle with a few modern improvements where needed.
Disclaimer – I am not LE, a veteran, an “operator” or anything else. I’m just a recreational shooter and unless the Zombie Apocalypse actually happens, the most serious use my rifle gets are the carbine matches with the local IDPA club. That said, I made the decision to drop some coin on the Krebs rifle so I know I’d have something I could depend on regardless of the circumstances. I have never regretted doing so.
I had no problem whatsoever with the aesthetics of the stock that came on the rifle. But, no matter how much I tried to get used to it, I never could. Since I’m only 5’7” (and have small hands), I prefer a shorter stock. Also, the shape of the original stock did not work for me either. I found the size and configuration of the small butt uncomfortable, and the metal butt plate didn’t help. Though it definitely wasn’t painful to shoot, it certainly diminished my enjoyment of shooting the rifle.
I wasn’t chomping at the bit to take a hacksaw and file to the receiver tang of a Krebs rifle, but after a lot of research, I made the decision to proceed with an ACE stock conversion. I used their internal block to get the length of pull down to where I like it and their FSM-AR folding mechanism. A Magpul CTR stock and mil-spec tube were used to complete the conversion.
Captions below photos;

Photo 1 – a close-up of the finished conversion. The buffer tube was cut so that when the CTR is fully collapsed, there is very little gap between stock and folding mechanism. Not only did this keep the length to absolute minimum with the stock collapsed, but IMO created a clean look too. Due to my short stature and little girly mitts, I do the vast majority of shooting with the stock in this position.

Photo 2 – Top view. The top of the CTR is wider and more rounded, providing a comfortable cheek weld.

Photo 3 – Stock folded, which works out fine with no optic attached to the rail.

Photo 4 – Close-up, right side.

Photo 5 – Left Side. When I cut the buffer tube, I finished it with a file, taking a little off at a time. My goal was to get the threads to bottom out with the tube properly indexed. Once I got it to that point, the tube was secured to the folding mechanism with Locktite and a roll pin.

Photo 6 – Close-up, top.
The next series of photos show the difference between the original and ACE/Magpul conversion. I zip-tied the original stock to the CTR and tried to position it as close as possible to where it would actually sit installed.

Photo 7. This photo illustrates a few reasons for my decision to do the conversion; (1) I attained a shorter pull, even with the Magpul recoil pad installed; (2) the height of the CTR stock is better suited for the optics I use; (3) I found the way the original stock protrudes on the bottom of the butt end was very uncomfortable. In comparison, the CTR tapers forward at the bottom, which I find far more comfortable.

Photo 8. Seen from the other side. The way the butt on the CTR stock angles forward on the bottom, in combination with its much larger contact area with the shoulder and recoil pad made a HUGE difference to me. The rifle is now truly a pleasure to shoot!

Photo 9. The difference in butt size between the two stocks.

Photo 10. There is considerable adjustment for height where the folding mechanism bolts up to the internal block.
In the final analysis, I am extremely happy with this conversion. It folds, it collapses, is FAR more comfortable to shoot and IMO looks like it belongs on the rifle. The only downside is that the combination of internal block, folding mechanism, buffer tube and CTR weigh 21 ounces vs. 12 ounces for the original stock. But for all benefits gained, I can live with the extra 9 ounces.
Installing the internal block is not difficult, but is time-consuming to fit it perfectly. Along with some filing on the block extensions, I ended up using brass shim stock (bonded to the ACE block with epoxy) to make the block fit snugly in the receiver and prevent it from shifting when tightening the screws that hold it in place.
Below are a few photos of how the rifle is set up and used 99% of the time with an Aimpoint CompC3 in a MI AK 30mm rail mount (bottom 1/3 co-witness). I hope some will find this long-winded, photo-laden response useful.

