All Sharps Bros. Gen2 AR15 lower receivers ship with a 6-32 set screw installed in the rear of the receiver. This set screw serves to capture the rear takedown pin spring.
Lost yours? Need an extra? This is the one.
Please note: if they are out of stock on our website, or you want to buy them bulk, you can also find them on Amazon. Just search "6-32 x 1/8-Inch Stainless Socket Head Set Screw."
**please note** older model Sharps Bros lower receivers had the rear spring/detent hole cut for a 4-40 set screw. The engraving is very small but look on the back of your receiver before ordering. It will be marked either 4-40 or 6-32 with an arrow pointing to the hole. If you are looking for 4-40 set screws you can find them on amazon for cheap. Just search "4-40 x 1/8 Inch socket head set screw."