Source: http://www.popsci.com/technology/article/2012-12/3-d-printed-assault-rifle-breaks-after-just-6-shots
Crédits:
2 déc. 2012
Test firing a printed (ABS-like Objet photopolymer) AR receiver in 5.7x28FN. Lower max PSI than .223, but broke the buffer tube ring within six rounds. We do not recommend printing a lower receiver for a rifle setup until the file can be further reinforced.
Full Review at http://defdist.tumblr.com/post/37023487585/printed-reinforced-ar-lower-review