TangoDown Vickers Tactical Carry Trigger, For Glk Gen 3/4, Black. WARNING: Modifying of the TangoDown Trigger in any way may render the firearm unsafe. Modification of any factory trigger assembly component may also render the firearm unsafe and/or void any applicable warranties. TangoDown strongly recommends that this product be installed only by a GLOCK certified gunsmith. TangoDown is not responsible for any violation of warranty or damages resulting from the use, modification or improper installation of this product. VTCT-001BLK There are very few modifications you can perform to your pistol that will reward the effort as the VTCT Carry Trigger. Try one" see your accuracy improve and you won't go back. Know that it is as rugged as your Glock" and will always have your back.