I realize there are loads of model replacements set and readily available, but I'm looking for opinions from people with more experience.

If not everything at least the weapons/weapon sounds for the glock, shotty, mp5, and nades. (the others are actually ok) I'm hoping some of you more into models/model replacement will have some good ideas.

If you have random suggestions for player and monster models or anything else related, please let me know! = )

I once saw the nintendo Zapper replacement for the glock.

Yeah I've seen it... pretty sweet = )

Let me clarify:

I'm really looking for more realistic versions of the current weapons, like cs or the newer mods.

There are a couple of good all weapon model/sound replacements out there, just have a look around. I'll see if I can get you some links later but I'm a bit busy at the moment.

Check out:

www.fpsbanana.com

Some really (and i mean REALLY) good ones there for a whole bunch of games including HL, CS, HL2, CS:S and other mods and games.

Can always make up something absurd like the Turnstile weapon set.

Whoa you guys are right about the fps banana... they have tons of crap for Half-Life (as well every ohter mod). I'll pimp screenies when I choose all my favourite replacements and get them in the game.

Rimrook: Those Turnstile weapons you mentioned look crazily unique and cool!

Yup, thats our rimmy. Damn his skills

Take a look through my FPSB stuff, because I'm a publicity whore:
http://www.fpsbanana.com/members/subs/23444
Anything for Sven is HL friendly.

NIce WorldCrafter! I dld your H&K mp5 replacement, it looks nice : )

(and sound too: win... I can't understand how some people make these nice replacements and don't edit the sound... I mean, that's like half the battle!)

As promised, my current weapon replacements from FPSBANANA:

Shotgun

Excellent. The only letdown, is it doesn't make the vacuum sound like you hear from the silenced shotty from No Country For Old Men. If you haven't seen this movie, I'd suggest you do. = )

Grenades

Pretty cool-looking with custom sounds.

357

Nice compact replacement and sounds realistic.

Glock => Markov

Plain, but not so much so as the olde glock! Includes sounds.

mp5 => M4

Excellent, with custom sounds.

rpg

Pretty cool, but I wish the rocket was fatter to look more real... Again, anything is better than the origianl, and the "floor" models are excellent. (also has the hud sprites)

That's it for now! = )

NOTE: These model replacements make my epoly levels skyrocket to over 150,000 (quite unplayable, on my machine at least) on wide-open maps with lots of weapons (like the recent Mario maps), so take that into consideration before using them!

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I usually keep the world models stock. =] But those are pretty badass

In the mod I'm working on i got exclusive permission to use the weapons models from Half-Life 1.5 Weapons Edition. Now that is a cool multiplayer mod!!!

gl_max_size 1024 for sharper textures.
Also, not to rain on your parade or anything, but skinning Half Life is pretty common and most people would see showing off what skins you use as spam.

On another note, when coding for half-life, there is so much potential for weapons it is amazing! I could code every single weapon to drop a different type of shell, drop an empty magazine when you reload, even allow players to add mods to their guns (working on this one!). With a bit of tweaking you can do anything. I believe that Half-life will live on for decades at this rate!!!