Welcome to Gaia! ::

The FN carries 15 rounds to the HK's 12 (a pitiful number for a gun that size)
The FN costs $600 to the HK's $2300
The FN is about the size of an M9, the HK is about the size of an M4
The HK has a threaded barrel, which the FNP does not. The FNP-45 Tactical has it, at a $300 upgrade.
The FN Tactical has provisions for a Docter red-dot sight.
The FN uses a Mil-Std P1913 rails, the HK uses HK proprietary rails.
The HK has an extra .5" of barrel over the Tactical, almost an inch and a half on the standard.
The FN Tactical has raised sights to see over a suppressor.
The FN has two or three backstraps.
The FN is fully ambidextrous without any modification whatsoever.
FN Customer Service doesn't hate you with all the wrath of a million jilted Klansmen simply for being a civilian.

Basically what it boils down to is that the Mk. 23, compared to the FNP-45 Tactical, is ******** massive, fits next to nothing on its rail, holds three fewer rounds, and costs $1400 more. The FNP is the hands-down winner. It MIGHT be a competition if the Mk. 23 were an $800 gun, but it's not, it's three times that.

Handgun accuracy is a lot more about sight radius, user skill, and ammo quality than actual overall gun quality.

Thanks for the input. I read up a bit on the FNP-45 and got the general gist that it offered the same things as MK 23 in some points better at a lower price.

$900 for a Tactical and it comes with 3 magazines I believe vs. the Mk 23s one and going for $2300-$2500.

Hanguns: the next sniper rifle.

If it'll hold six MOA, it's good enough for a combat pistol. Think: that's three inches at 15 yards, 1.5" at twenty-five. Do you REALLY need to put twelve shots into the perp's eyeball? In fact, it's better to be a bit inaccurate... twelve shots in the same hole is one .45" hole. Twelve shots in twelve holes is a ******** bigger.

@Freak: I think I've heard that too. Something about a square peg in a round hole.

my HK P9S has a crisp pull when it's cocked.

length of travel after firing as the trigger is pulled is a little far

I like H&K...but Im not addicted to them to the point like some people are where they use no logic and see no other options