Tokyo Marui AA12/SGR12 M4 Mag Adaptor

thingiverse

Maybe this redundant piece model is no longer needed now that Tokyo Marui has released their high cap magazine for the AA12/SGR12, but I still think it's worth releasing as most people are using M4 mags. Please note that I have only tested this with Lonex Flash Mags, and many other M4 mags may not fit. If you leave a comment telling me exactly what changes you need to make for your mags to fit, I'll do my best to update the model. For maximum smooth feeding, a feed spring must be inserted inside. For maximum durability, it requires a short section of old outer barrel about 14mm long that pushes into the mag. To achieve this, simply cut a piece from an old barrel and round the end that pushes into the mag slightly with a file. Alternatively, you could print a 14mm long tube with an 8.5mm OD and 6.5mm ID instead. Like my M870 M4 mag adapter, this model requires a V3 motor height spring for the button and an M3 screw about 35mm long to secure it in place. You can purchase the necessary spring at https://www.retroarms.com/other/bowden-spring-for-m249-m60-mags. I printed mine upside down.