203 barrel question

[Crambone]

Can a M203 barrel be cut down? With the new hotness being the shorty 40mm launchers, can older 12 or 9” barrels be shortened like you would shorten a shotgun barrel? 

[eMGunslinger]

Done many for people, it's just like anything else.

[SGT Fish]

Yeah but you won't get too much shorter than 9" with with traditional receiver. Lots of people cut 12s down to 9 as they are harder to find. 

The LMT "shorty40" pirate gun is 7" but uses a different receiver.  You can modify longer barrels to work with them though

 

May want to send it out to anodizing afterwards for longevity. 

[Crambone]

On 1/30/2022 at 7:01 PM, SGT Fish said:The LMT "shorty40" pirate gun is 7" but uses a different receiver.  You can modify longer barrels to work with them though

What are the differences between the two receivers?

[SGT Fish]

15 hours ago, Crambone said:

What are the differences between the two receivers?

The receiver on the shorty 40 is shorter. That way it doesn't stick our past the barrel. A standard receiver is just short of a 9" barrel. So the shorty receiver is about 1.5" shorter than standard. 

I did have a guy show me how he modified a standard barrel to work on the shorty receiver. It involved lengthening the slot on the cocking bar that is peened to the barrel. I have the pictures saved somewhere.