20mm

Then can you lengthen a 12-gauge and turn it into a 18.5mm rifle without breaking the NFA?

In the OICW/air burst sense? Yes. When you make it rifle-mounted the rifle is rendered retardedly bulky and heavy, and as a whole 20mm fragmentation has a very underwhelming punch.

>It's also airburst
Congrats, it's still sending an absolutely pathetic amount of shrapnel flying.

Ummm yeah. big difference between a shotgun shell and a grenade/cannon round.

?

The us deployed their 25mm version in Afghanistan.

Also the larger versions for autocannons work fine.

I think the biggest problem is cost. Each round is so expensive and complex to airburst at a designated range. When a regular dumb 40mm grenade can do practically the same thing cheaper and simpler.

>Daily reminder that politics and optics, not issues with effectiveness, killed the XM25
Reality and practicality killed the XM25

And yet everyone that was in the target market for it loved it. Trying to force it on the Rangers for a raid was a dumb decision. But its combat use elsewhere, in places where the user had support and the requirements for the flexibility of the rifle were significantly lessened, like with the 101st, generated incredibly positive combat reports and user reviews.
Same effectiveness as a PD 40mm.
And yet the vast majority of users, the combat reports, and the brass all raved about it. Read all the documentation they put out trying to save it from SASC and the IG.

>Also the larger versions for autocannons work fine.
If you cant tell the difference between a pocket sized 20mm airburst grenade and a 20mm autocannon round, you quite possibly are the dumbest person posting on this board right now.

Airsburst technology, dumbass

So you cant comprehend how a 20mm airburst autocannon round and a 20mm airburst handheld grenade launcher work?
Are you retarded? The actual projectile dimension of a 20mm autocannon round is at minimum 4x the size of the grenade launcher round.
Thus giving the autocannon 4x more working space to pack technology into

How well would that Russian jumping charge work for a smaller grenade package? I believe it was the VOG-25P model that has it. Instead of some complex timing fuses to get it to airburst, why not a small charge in the nose that causes it to bounce into the air or off a wall a very short distance before exploding?

So would that work for sub-30mm rifle grenades?

>Daily reminder that politics and optics, not issues with effectiveness, killed the XM25
>It was a bulky, under-powered, unversatile POS that deserved to die.
>Reality and practicality killed the XM25
It died to me the day the faggot ass army named it "the punisher"

Holy fuck that scope over bore height is atrocious, Its like 8 fucking inches what the fucking fuck

Attached: 1387509277429.jpg (161x194, 5K)

Read "larger versions for autocannons"

Emotional retard.

We have our own version in 40mm. The M397.
They dont offer nearly the same capabilities as proper programmable airburst, but does improve performance over its contemporaries

Not as good but the idea is to be simpler to implement, which might be very useful for grenades smaller than 40mm. Even if it isn't much of a physical space reduction or if it even takes up more space than an electronic airburst fuse, the simplicity might allow for more to be made on the cheap and for volume of fire to make up for it. No need for the rangefinder computer on the launcher so there's weight to be saved for more ammo on a person.