Oh yes, Big Collar (I've found versions 2 and 3). But unfortunately, not for M4 as far as I can tell. Perhaps put in a request with Royloo, if it's what you're after, as he supports multiple figures with almost everything he does.

Big Collar 3 is here: www.contentparadise.com/ProductDetails.aspx

Big Collar 2: shop.poseraddicts.com/index.php

______________

Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3