Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

AR-15 Foregrip

by Ubersaint, published

AR-15 Foregrip by Ubersaint Mar 9, 2013
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This is my start at building a foregrip for a AR-15/M4.


Download and see what you can do with this, but its not finished for normal printing and size might be off on the rail mount. Please leave feedback with ideas on how to improve it or how to get it to print easier.

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Did you ever finish this design to fit your AR? I want to print one for a friend but I don't have much knowledge of scaling to fit and I'd rather not waste any plastic.

can you post a copy without the grooves? my printer keeps messing them up. and phreak42x you scaled all dimensions by 11% and flipped it?

I printed this successfully as well and just as phreak said, it was too small. Hindsight being 20/20 I should have read the comments first. Nevertheless, great model, printed flawlessly while my rep2 has been plagued with extruder problems.

I have a grip for my AR-15 that has a battery compartment in it and IMO feels better than this style of grip... I think a derivative might be in the works :D

I printed it successfully, twice.

First off, flip the model over, so the flat side is down, as it always seems to print better with the flattest side down.

Second: The rail slot is too small for my AR-15 A3's quadrail. I measured the gap at around 18-19mm on the model, and my rail is around 21mm. I scaled the model by 10% and it is VERY close to fitting, and can be filed down to fit, 11% scale should be perfect.

ABS @ 230C
120C bed temp
Full support (I used a thick raft, and had to cut it off, but it didn't curl or warp.)
Scale larger by 11% if your rails are like mine. (9.675" YHM Lightweight Specter Quad Rail, Free Float)

I will release a remix of this shortly, with it flipped and scaled

Anyone want to take a crack at printing this? My printer is down right now so i don't have much time to work on prototyping it right now.

Would print easier if you cut it in half down the middle. It would wind up stronger that way, too.

Been thinking about doing that and adding support on the arched areas. So far i'm still working on getting the rail area to fit correctly.