I use these to build Ar15 rifles, they are one size fits all to fit some Ar15 parts. Small springs and pins are often lost when assembling AR15 rifles, and paying five bucks for a pin is insane. So spare pins are a good idea when building or upgrading parts.
π© Hard-to-Find Quick Fastener 014973253790 - 4 Piece Set
7 Review
πͺ Strong and Versatile: National Hardware N222 406 Square Bolts for Secure Fastening
7 Review
π© M6 1.0 Stainless Steel Flanged Hexagon Flange
8 Review
POWERTEC 4 Inch 20 2 Inch QTB1005 T Slot: A Revolutionary, High-Quality Power Tool Accessory!
8 Review