I sold mine to finance another project. But I must say, it's an AWESOME gun. Recoil is about like a .22LR. Stopping power is like a 5.56 NATO round. You can carry it IWB... accurate as hell... the list goes on. If I had endless $$, I'd add one back to my collection today.
I'm not convinced the stopping power is any where close to the 5.56. Here's a chart of ballistics comparing it to a .22 Magnum. Keep in mind, these ballistics are from a 16" bbl, not a short-barreled pistol:
| Cartridge | Weight | Muzzle Velocity | Muzzle Energy |
| 5.7Ã28 SS190 AP FMJ | 32 gr (2.1 grams) | 2,350 ft/s (716 m/s) | 397 ft·lb (538 Joules) |
| .22 Magnum HP | 30 gr (1.9 grams) | 2,200 ft/s (670 m/s) | 322 ft·lb (437 Joules) |
| 5.7Ã28 SS197SR JHP | 40 gr (2.6 grams) | 1,950 ft/s (594 m/s) | 340 ft·lb (461 Joules) |
| .22 Magnum JHP | 40 gr (2.6 grams) | 1,910 ft/s (580 m/s) | 324 ft·lb (439 Joules) |
Why not a Grendel, instead? Or the more recent Keltec PMR-30 offering? Just sayin'...
The chrome-lined barrel keeps quite clean. Mil-comm products for cleaning and lubrication work nicely with the FSN. The key that many owners miss is the removal of the lacquer build-up. The cases are coated in lacquer for extraction purposes. The lacquer builds up in the chamber area of the FSN. Most firearms clean products do not remove this lacquer. Permatex 802790 carb cleaner will remove the lacquer. After cleaning the chamber and barrel with a firearm cleaner, lightly soak a q-tip in Permatex carb cleaner and clean the chamber. Then smile in awe at how filthy the formerly white but now grey-black q-tip is. The lacquer needs to be removed or else you may run into feeding and/or extraction issues.
