1) The M-16 rifle : Thumbs down. Chronic jamming problems with the talcum powder like sand over there. The sand is everywhere. [The Marine] says you feel filthy 2 minutes after coming out of the shower. The M-4 carbine version is more popular because it's lighter and shorter, but it has jamming problems also. They like the ability to mount the various optical gunsights and weapons lights on the picattiny rails, but the weapon itself is not great in a desert environment. They all hate the 5.56mm (.223) round. Poor penetration on the cinderblock structure common over there and even torso hits cant be reliably counted on to put the enemy down.
Fun fact: Random autopsies on dead insurgents shows a high level of opiate use.

2) The M243 SAW (squad assault weapon): .223 cal. Drum fed light machine gun. Big thumbs down. Universally considered a piece of shit. Chronic jamming problems, most of which require partial disassembly. (that's fun in the middle of a firefight).

3) The M9 Beretta 9mm: Mixed bag. Good gun, performs well in desert environment; but they all hate the 9mm cartridge. The use of handguns for self-defense is actually fairly common. Same old story on the 9mm: Bad guys hit multiple times and still in the fight.

4) Mossberg 12ga. Military shotgun: Works well, used frequently for clearing houses to good effect.

5) The M240 Machine Gun: 7.62 Nato (.308) cal. belt fed machine gun, developed to replace the old M-60 (what a beautiful weapon that was!!). Thumbs up. Accurate, reliable, and the 7.62 round puts 'em down. Originally developed as a vehicle mounted weapon, more and more are being dismounted and taken into the field by infantry. The 7.62 round chews up the structure over there.

6) The M2 .50 cal heavy machine gun: Thumbs way, way up. "Ma deuce" is still worth her considerable weight in gold. The ultimate fight stopper, puts their dicks in the dirt every time. The most coveted weapon in-theater.

7) The ..45 pistol: Thumbs up. Still the best pistol round out there. Everybody authorized to carry a sidearm is trying to get their hands on one. With few exceptions, can reliably be expected to put 'em down with a torso hit. The special ops guys (who are doing most of the pistol work) use the HK military model and supposedly love it. The old government model .45's are being re-issued en masse.

8) The M-14: Thumbs up. They are being re-issued in bulk, mostly in a modified version to special ops guys. Modifications include lightweight Kevlar stocks and low power red dot or ACOG sights. Very reliable in the sandy environment, and they love the 7.62 round.

9) The Barrett .50 cal sniper rifle: Thumbs way up. Spectacular range and accuracy and hits like a freight train. Used frequently to take out vehicle suicide bombers ( we actually stop a lot of them) and barricaded enemy. Definitely here to stay.

10) The M24 sniper rifle: Thumbs up. Mostly in 308 but some in 300 win mag. Heavily modified Remington 700's. Great performance. Snipers have been used heavily to great effect. Rumor has it that a marine sniper on his third tour in Anbar province has actually exceeded Carlos Hathcock's record for confirmed kills with OVER 100.

11) The new body armor: Thumbs up. Relatively light at approx. 6 lbs. and can reliably be expected to soak up small shrapnel and even will stop an AK-47 round. The bad Hot as shit to wear, almost unbearable in the summer heat (which averages over 120 degrees). Also, the enemy now goes for head shots when ever possible. All the bullshit about the "old" body armor making our guys vulnerable to the IED's was a non-starter. The IED explosions are enormous and body armor doesn't make any difference at all in most cases.

12) Night Vision and Infrared Equipment: Thumbs way up. Spectacular performance. Our guys see in the dark and own the night, period. Very little enemy action after evening prayers. More and more enemy being whacked at night during movement by our hunter-killer teams. We've all seen the videos.

13) Lights: Thumbs up. Most of the weapon mounted and personal lights are Surefire's, and the troops love 'em. Invaluable for night urban operations. [The Marine] carried a $34 Surefire G2 on a neck lanyard and loved it.

I cant help but notice that most of the good fighting weapons and ordnance are 50 or more years old!!!!!!!!! With all our technology, it's the WWII and Vietnam era weapons that everybody wants!!!! The infantry fighting is frequent, up close and brutal. No quarter is given or shown.

Bad guy weapons:

1) Mostly AK47's The entire country is an arsenal. Works better in the desert than the M16 and the .308 Russian round kills reliably. PKM belt fed light machine guns are also common and effective. Luckily, the enemy mostly shoots like shit. Undisciplined "spray and pray" type fire. However, they are seeing more and more precision weapons, especially sniper rifles. (Iran, again)

Fun fact: Captured enemy have apparently marveled at the marksmanship of our guys and how hard they fight. They are apparently told in Jihad school that the Americans rely solely on technology, and can be easily beaten in close quarters combat for their lack of toughness. Let's just say they know better now.

2) The RPG: Probably the infantry weapon most feared by our guys. Simple, reliable and as common as dogshit. The enemy responded to our up-armored humvees by aiming at the windshields, often at point blank range. Still killing a lot of our guys.

3) The IED: The biggest killer of all. Can be anything from old Soviet anti-armor mines to jury rigged artillery shells. A lot found in [The Marine's] area were in abandoned cars. The enemy would take 2 or 3 155mm artillery shells and wire them together. Most were detonated by cell phone, and the explosions are enormous. You're not safe in any vehicle, even an M1 tank. Driving is by far the most dangerous thing our guys do over there. Lately, they are much more sophisticated "shape charges" (Iran, again) specifically designed to penetrate armor.

Fact: Most of the ready made IED's are supplied by Iran, who is also providing terrorists (Hezbollah types) to train the insurgents in their use and tactics. That's why the attacks have been so deadly lately. Their concealment methods are ingenious, the latest being shape charges in Styrofoam containers spray painted to look like the cinderblocks that litter all Iraqi roads. We find about 40% before they detonate, and the bomb disposal guys are unsung heroes of this war.

4) Mortars and rockets: Very prevalent. The soviet era 122mm rockets (with an 18km range) are becoming more prevalent. One of [The Marine's] NCO's lost a leg to one. These weapons cause a lot of damage "inside the wire". [The Marine's] base was hit almost daily his entire time there by mortar and rocket fire, often at night to disrupt sleep patterns and cause fatigue (It did). More of a psychological weapon than anything else. The enemy mortar teams would jump out of vehicles, fire a few rounds, and then haul ass in a matter of seconds.

5) Bad guy technology: Simple yet effective. Most communication is by cell and satellite phones, and also by email on laptops. They use handheld GPS units for navigation and "Google earth" for overhead views of our positions. Their weapons are good, if not fancy, and prevalent.

Their explosives and bomb technology is TOP OF THE LINE. Night vision is rare. They are very careless with their equipment and the captured GPS units and laptops are treasure troves of Intel when captured