I think I'm out of grey bricks.. but gatehouse is almost finished! : r/legocastles
NEW Lego Castle 70402 The Gatehouse Raid SEALED MINT | eBay
LEGO IDEAS - The King's Castle Gatehouse
Amazon.com: HMNY Medieval Castle Building Set, MOC-138840 Black Falcon Castle Barbican Gatehouse Building Kit, Large Medieval Architecture Building Blocks Set for Adults, Compatible with Lego (1977 Pieces) : Toys & Games