diff --git a/content/2022/06/this-day-in-diy-guns-and-ammo-2022-06-29.md b/content/2022/06/this-day-in-diy-guns-and-ammo-2022-06-29.md
index 77c67cf..c28cba9 100644
--- a/content/2022/06/this-day-in-diy-guns-and-ammo-2022-06-29.md
+++ b/content/2022/06/this-day-in-diy-guns-and-ammo-2022-06-29.md
@@ -7,7 +7,7 @@ category: This day in DIY
 
 Patent US20210341276A1 issued Jun 28.  In its text, published by the USPTO, is sufficient information to produce and load a variant of homemade 9mm Dagny Dagger armor-piercing projectiles
 
-https://pdfpiw.uspto.gov/.piw?PageNum=0&docid=11371817
+[https://pdfpiw.uspto.gov/.piw?PageNum=0&docid=11371817](https://pdfpiw.uspto.gov/.piw?PageNum=0&docid=11371817)
 
 ![Patent US20210341276A1]({attach}/2022/06/Screenshot2022-06-29.png)