How much does the Shaft, insert, fletching and nock weigh?

[ABarOfSoap]

Im trying to figure out thelighest arrowI can get, and i know at 27" and 8.0 gpi my arrows will weigh 316 grains with a 100 grain tip on, but approximatley how much does the Shaft, Insert, fletching (blazer veins) and knock weigh about on the average carbon arrow?

[buckmaster]

GPI is grains per inch of your shaft,

I'm not sure but you can figure around 15grains for blazers(3), and around 12 for a nock, And I have no idea about a insert.

[TexasBowHunter]

Most arrow manufacturer's post the weights of their components on their web site's.....You can guestimate but to get axact you will need to check the site's..!!!!