Yes it should work on any ar 15 rifle.
it is 5.6 oz maximum weight of this kit
Yes, this KAK AR-15 Configurable Buffer Kit will work in a carbine length receiver extension/buffer tube for the AR15, AR10, and AR9 platform and allow you to fine tune the weight of the buffer to increase reliability and functionality.
Please email us at techsales@opticsplanet.com so we can further answer your question.
Yes, this should work.