Matchlock musket support stick.

[acmsarh]

How about this for the top piece. https://www.sheridanmarine.com/produ...x48mm-rowlocks .

[Mr.C]

Yep had a look at a few sites and now it's been suggested it seems the obvious way to go.
Thanks all.

[keith66]

How wide & deep is the forend on the musket?, For sourcing a single old rowlock I would ask your nearest sea scout or sea cadet group, they are more likely to have an older type with the equal height arms laying about.