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Here's something that I never found a reason for in the fluff, and that is why do IG not get Assualt Cannons? I don't see any reasons why they wouldn't be used, the base technology for them can't be that different than an Autocannon. So what did I skip over in the fluff that explains why Space Marines can sue them but not IG?

They use to be termpermental and commonly jam. Plus they are "assault" which guard apparently dont do.

It is used in :
- Imperial Guard Sentinel
- Imperial Navy Marauder Destroyer
- Imperial PDF in a stand-mounted weapon

So no it's not an Astarte privilege

Engrenages wrote:
It is used in :
- Imperial Guard Sentinel
- Imperial Navy Marauder Destroyer
- Imperial PDF in a stand-mounted weapon

So no it's not an Astarte privilege

All Forge World, I take it?

Yeah, it's classed as an auto weapon in that it uses a solid-slug ammunition.

 Lord Corellia wrote:

Engrenages wrote:
It is used in :
- Imperial Guard Sentinel
- Imperial Navy Marauder Destroyer
- Imperial PDF in a stand-mounted weapon

So no it's not an Astarte privilege

All Forge World, I take it?

Yeah, it's classed as an auto weapon in that it uses a solid-slug ammunition.

what is an astartes privilege? Gravguns? Many weapons dont feature on IG infantry, because of how scrawny humans are but then do make an appearence on IG tanks. MM, Plasmacannons etc.

 Exergy wrote:

 Lord Corellia wrote:

Engrenages wrote:
It is used in :
- Imperial Guard Sentinel
- Imperial Navy Marauder Destroyer
- Imperial PDF in a stand-mounted weapon

So no it's not an Astarte privilege

All Forge World, I take it?

Yeah, it's classed as an auto weapon in that it uses a solid-slug ammunition.

what is an astartes privilege? Gravguns? Many weapons dont feature on IG infantry, because of how scrawny humans are but then do make an appearence on IG tanks. MM, Plasmacannons etc.

But Assualt Cannons don't, which is a shame, becuase I'd love a 5-10 pt Assualt Cannon turret on a chimera.

I, for one, would be thrilled if I could take a heavy weapons team with an Assault Cannon. I'd also like to point out that the Assault Cannon is smaller than a Lascannon, so the weight issue is moot. Guard run two guys to a heavy weapon to deal with that. The reason they don't give foot soldiers things like MM and Plasmacannons is because those are rare and expensive to manufacture. Foot soldiers are more likely to get killed and their weapon lost, but on tanks their better protected. Again, this is a moot point for Assault Cannons which use much more common and easily produced solid-slug firing technology. I think the problem is that they would make Heavy Bolters even more worthless than they are now.

 fallinq wrote:
I, for one, would be thrilled if I could take a heavy weapons team with an Assault Cannon. I'd also like to point out that the Assault Cannon is smaller than a Lascannon, so the weight issue is moot. Guard run two guys to a heavy weapon to deal with that. The reason they don't give foot soldiers things like MM and Plasmacannons is because those are rare and expensive to manufacture. Foot soldiers are more likely to get killed and their weapon lost, but on tanks their better protected. Again, this is a moot point for Assault Cannons which use much more common and easily produced solid-slug firing technology. I think the problem is that they would make Heavy Bolters even more worthless than they are now.

The ammunition needed to support the rate of fire would probably be too much. That's the only think I can think of, anyway.

There's no real fluff reason, besides maybe that the Mechanicus hasn't shared the STC with the Guard and only gives them to certain Space Marine/Navy factions.

Though like IRL gatling weapons it's probably very inaccurate at long range and a heavy machine gun would be better.

 Harriticus wrote:
There's no real fluff reason, besides maybe that the Mechanicus hasn't shared the STC with the Guard and only gives them to certain Space Marine/Navy factions.

Though like IRL gatling weapons it's probably very inaccurate at long range and a heavy machine gun would be better.

Heavy Stubber/Bolter vs Assault Cannon in 40k the Gatling is better, and I want it. Serously, having Assault Cannons on Chimeras, Sentinels, Hellhounds, would be aweosome.

Same excuse as to why CSM don't get common Astartes wargear...

REASONS.

 Lord Corellia wrote:

Engrenages wrote:
It is used in :
- Imperial Guard Sentinel
- Imperial Navy Marauder Destroyer
- Imperial PDF in a stand-mounted weapon

So no it's not an Astarte privilege

All Forge World, I take it?

Nope, the original Sentinel model from second edition (I think? or third) was armed with a rotary assault cannon rather than a lascannon.

Yeah, the old RT/2E Sentinel had an Assault Cannon. When GW did the 3E reboot, they redid the unit and it didn't retain the assault cannon.

The 1st edition Sentinel predated the invention of the Assault Cannon, the gun was actually meant to be a Multi-Laser, then the Assault Cannon came into being and GW decided to declare the gun was now an Assault Cannon. Which is possibly why they eventually ditched the idea when 3rd edition came around.

 Nightlord1987 wrote:
Same excuse as to why CSM don't get common Astartes wargear...

REASONS.

Well the old excuse used to be "it wasn't around back in the Heresy" but the FW HH books have sort of torpedoed that whole concept.

Welp, just like a mini gun today, the assault cannon im sure has many draw backs, leading to issues. For instance, it probably consumes ammo at an insane rate, and is immensely heavy, meaning its probably not portable at all, and probably needs its own gun platform.
My guess is that the space marines utilize it because they have the capabilities to keep it fed and mobile.

I imagine the Guard doesn't use Assault Cannons because they'd drain their ammunition in a couple bursts. And outside of roomy vehicles (which the guard significantly lacks) or troops in power armor able to carry extra boxes- you've just got a real heavy stick when you drain the belts.

An assault cannon may be shorter than a lascannon, but it would not be lighter.

Lascannons are not likely to have too many thick metal components; the assault cannon has 6 metal barrels and a motor of some sort to turn the barrels. On top of that you have ammunition requirements(see expendables 3 for a cute exchange between the rock and dolph lundrgren about "30 seconds before you blow your load", followed by 30 seconds of firing his minigun then out of ammo).

Termies can use the assault cannon because of the armor(str enhancement plus possibly locking the arm mostly in place while firing); where they get replacement ammo is just kinda hand-waved(that box would supply maybe 2 turns of shooting)

As far as vehicles go: guard gets gatling cannons(punisher or taurox); same basic tech, but up-scaled for the guard.

Because the requisition orders are still going through the munitorum

 Jollydevil wrote:
Welp, just like a mini gun today, the assault cannon im sure has many draw backs, leading to issues. For instance, it probably consumes ammo at an insane rate, and is immensely heavy, meaning its probably not portable at all, and probably needs its own gun platform.
My guess is that the space marines utilize it because they have the capabilities to keep it fed and mobile.

This here is correct. The only vehicles to mount an AssCan are Land Raiders, Stormravens (which have huge room for ammo), Razorbacks (which have 4 power armour suits worth of ammo storage in addition to normal room) and certain Predators, which have 10 PA worth of extra ammo space. On infantry, only Terminators actually have them. Then of course, Dreadnoughts as a primary weapon so have huge mobilty and ammo reserves.

 Deadshot wrote:

 Jollydevil wrote:
Welp, just like a mini gun today, the assault cannon im sure has many draw backs, leading to issues. For instance, it probably consumes ammo at an insane rate, and is immensely heavy, meaning its probably not portable at all, and probably needs its own gun platform.
My guess is that the space marines utilize it because they have the capabilities to keep it fed and mobile.

This here is correct. The only vehicles to mount an AssCan are Land Raiders, Stormravens (which have huge room for ammo), Razorbacks (which have 4 power armour suits worth of ammo storage in addition to normal room) and certain Predators, which have 10 PA worth of extra ammo space. On infantry, only Terminators actually have them. Then of course, Dreadnoughts as a primary weapon so have huge mobilty and ammo reserves.

Whats incorrect?
That just furthers my point, marines have the capabilities to utilize them, so they do.

The imperial fists invented the assault cannon (or at least we're the first to test it), this could be one of the edicts that emp could not change after being put in the throne, something as simple as the council of him saying "the astartes shall use the new assault cannon, to test it" then when enthroned, no one changed it, as his word was law.

 Kommissar Kel wrote:
An assault cannon may be shorter than a lascannon, but it would not be lighter.

Lascannons are not likely to have too many thick metal components; the assault cannon has 6 metal barrels and a motor of some sort to turn the barrels. On top of that you have ammunition requirements(see expendables 3 for a cute exchange between the rock and dolph lundrgren about "30 seconds before you blow your load", followed by 30 seconds of firing his minigun then out of ammo).

Termies can use the assault cannon because of the armor(str enhancement plus possibly locking the arm mostly in place while firing); where they get replacement ammo is just kinda hand-waved(that box would supply maybe 2 turns of shooting)

As far as vehicles go: guard gets gatling cannons(punisher or taurox); same basic tech, but up-scaled for the guard.

also an assault cannon is going to have significant recoil...
A 20mm chain gun is putting out 6000 rounds per minute. Like firing 10 large caliber machine guns at the same time.
30mm would be even worse

Also the gun has rending, which leads me to believe that the shells are a dense brittle material, like Uranium. (Uranium has nearly twice the density of lead)

I think it's a nasty combination of fluff, models, and rules, plus the urge to give different armies signature weapons.

As others have pointed out, the Sentinel had an Assault Cannon in 2nd edition. That's pretty clearly an AssCannon, not a multi-laser:



However, the chimera has a multilaser since forever. I don't know if they just decided to make the multi-laser a signature IG weapon, but when 3rd edition came out, and IG got the new plastic sentinel, it came with the multilaser. Nobody was bummed, though, because the assault cannon blew chunks in 3rd edition: Heavy 3, 24" range, S6, AP4. Oh, and if you rolled all ones, it would Jam, and you lost the weapon. The multilaser, with longer range, was a better option, especially for the fragile sentinel.

Now, of course, I wish like hell the IG had ACs, but I'm okay with it being a Space Marine only thing. (Not exactly, as the Inquisition and Imperial Navy both have them). But given the main goal for IG weapons, I think the AC really would be a bad choice. The IG favors robust, simple weapons that require the most straightforward logistics. A complex, temperamental, and ammunition eating weapon doesn't mesh with that philosophy.

That Sentinel is possibly the most adorable thing to ever wield a massive, death-dealing chaingun.

 Lord Corellia wrote:
That Sentinel is possibly the most adorable thing to ever wield a massive, death-dealing chaingun.

razorbacks get 2, although they always shoot the same target.

Imagine... a Punisher with sponson and hull assault cannons....

Its not enough dakka.... but that would be ALOT of dakka.... Then put pask in it.... laugh hysterically as one rolls towards the enemy... throw dice and watch things die.

 Engine of War wrote:
Imagine... a Punisher with sponson and hull assault cannons....

Its not enough dakka.... but that would be ALOT of dakka.... Then put pask in it.... laugh hysterically as one rolls towards the enemy... throw dice and watch things die.

No, hull and sposnson mounted taurox punishers. They mount on the same turret as an autocannon and so I think you could definitely get away with it being hull mounted concerning weight issues. Then bulk up the sponson mountings to deal with the extra weight and have a tank capabple of putting out 50 shots every turn.