LANCER L7AWM 20rd Magazine Review

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7 years 9 months ago #47840 by jtallen83

GGaskill wrote: Since you mentioned measuring, can you measure the front and rear widths of these for me? I tried a Magpul mag that was supposedly for an AR10 but it didn't fit (too wide) the magwell of my ASA. Would like to know these would fit before ordering some.

Thanks.

measured both 10 and 20 round lancers;

20 round mag width;
front-1.065 inch
back- 1.062 inch

10 round mag width;
front- 1.065 inch
back- 1.060 inch

The new 10 rounder was waiting for me when I got home but had the same follower tilt the first one did so looks like it will be strictly P-Mags for me.

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7 years 9 months ago #47843 by GGaskill
Thanks for doing that for me. Has Lancer said anything regarding the failing design?

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7 years 9 months ago #47844 by jtallen83
No real response, they offer to exchange the mag but they just come the same. My guess is they opened up the tolerances some from my earlier 20 rounder to better handle debris as a trade off. The tolerances for my Matrix build just won't deal with the little bit of extra tilt on the follower this allows. My 716 functions fine with them but I'd rather have mags that will function in both.

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7 years 9 months ago #47849 by GGaskill
Thanks again. I finally measured the ASA and the mag well is only .965" at the front so this is obviously not going to work. M14 mags fit fine but do not have the same channel on the back.

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