A&K 870 to Ithaca 37 Conversion
Posted: Mon Dec 29, 2025 12:17 pm
I had an A&K Airsoft 870 I wasn't doing anything with so I decided to convert it to an Ithaca M37. It's not a perfect conversion but it's definitely good enough for costuming and the gun is still functional for Airsoft.
Modifications include:
1. Filling the 870 ejection port and adding dummy screws to the reciever
2. Removing the 870 trigger guard and installing a 3d-printed Ithaca style one
3. Changing the magazine cap
4. Slightly lengthening the barrel
5. Modifying the forend by shortening it and adding front and rear trim rings
So far it's looking good, hoping for the weather to let up so I can finish painting it.
If you're interested in trying this yourself, I uploaded the STLs to Cults. Any feedback would be appreciated!
https://cults3d.com/en/3d-model/game/ai ... a-model-37
Modifications include:
1. Filling the 870 ejection port and adding dummy screws to the reciever
2. Removing the 870 trigger guard and installing a 3d-printed Ithaca style one
3. Changing the magazine cap
4. Slightly lengthening the barrel
5. Modifying the forend by shortening it and adding front and rear trim rings
So far it's looking good, hoping for the weather to let up so I can finish painting it.
If you're interested in trying this yourself, I uploaded the STLs to Cults. Any feedback would be appreciated!
https://cults3d.com/en/3d-model/game/ai ... a-model-37