I have 3 of their 30 round gen 1 mags and have had no trouble with them running in my NEA15. The only thing that is really a non issue is that when inserting a empty mag then cocking the action sometimes the bolt hold open isn't tripped but when firing live rounds it has always held the bolt back on the last round. I think I was the first NZ customer to receive the first run of the spear mags, and on my next purchase I received a free 30 rounder for my patience. Thanks for that Terry @ spear mags.
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