BT57-QK monopod £80 posted
This is the one here https://www.sportingservices.co.uk/products/bt57-qk
BT19 bipod spigot with BT20 picatinny rail attachment £70 posted
https://www.sportingservices.co.uk/products/bt19-atlas-accuracy-international-spigot
Viperskins for AI AEmk3 £70
AI AEMk3 20 MOA Rail £70
Pics of actual items available on request.