ACR / Masada to M4 buffer tube
thingiverse
Created for a A&K ACR (Masada) airsoft rifle. It adapts the stock from the proprietary connection to a M4 buffer tube. I'm not 100% sure on what spec the buffer tube is, you may need to make some changes to get it to fit on your buffer tube. Recommended infill is 100% because of the amount of stress that is put on the stock. Scaling is set to millimeters.
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