: You will need a hammer spring, trigger spring, and disconnector spring.
: Two 0.154" diameter pins (hammer and trigger pins) are required to hold the assembly in place. Where to Find Them FAPv1.zip
To complete the assembly for (a commonly referenced file for a 3D-printable firearm component), you typically need a standard AR-15 Fire Control Group (FCG) and a Lower Parts Kit (LPK) . Essential Components : You will need a hammer spring, trigger
: The core mechanical levers that release the firing pin. FAPv1.zip
: Available at Aero Precision or Tiger Rock Inc .
: Ensures the weapon doesn't fire automatically.
: Found at SMF Tactical or Tenda Canada .