alum nocks 22 gr
alum inserts 32 gr
brass inserts 110 gr [or possibly 90]
[3] 2"Blazers 18 gr
[3] 4" dura 27 gr
GT L II's 8.6 gr per inch [been told, haven't checked]

Factory GT's used to weigh 357 gr w/ alum inserts and 5" vanes. If your MK's are light, call him and ask why, I'm sure he'ld like to know.