How's things mate,well I hope.
Yes It certainly looks like a good time for all involved.I do like the last two images you posted,very period looking.
I think it is a Swingfire wire guided AT Missle.
First deployed in 1969 with the British Army.It's still part of the Striker system I believe(if that has not been retired due to UK Defence cuts,scary the continued downgrading of the British Military,They are turning RN into a brown water navy and now a territorial part time army as a front line defence.The lessons of the past are not being learned Ade,shame )
Developmental Swingfire from the late 60's
Have a ball at your next reenactment meet mate.
All the best Ade,