Geissele SSA X w/ Lightning Bow Trigger 4.25 - 4.75 lb Black. The nano-coating enhances wear and corrosion resistance and keeps the trigger smooth and breaking clean even after heavy use with minimal lubrication. If you're looking for a new AR Triggers for your AR platform or M4 carbine rifle then buy the Geissele SSA X Lightning Bow Trigger. Specifications for Geissele Ssa X w/ Lightning Bow Trigger: Manufacturer: Geissele Trigger Pull Weight: 4.25 - 4.75 lb Trigger Pin Size: Mil-Spec Gun Make: AR Platform Gun Model: AR-10 AR-15 Gun Type: Rifle Condition: New Country of Origin: USA Features of Geissele SSA X w/ Lightning Bow Trigger Our triggers are designed for mil-spec AR15/M4 carbine rifles Our AR15 triggers are not compatible with the Sig MPX/MCX weapons or Pistol Caliber Carbine AR15/M4 variants. Using them in these platforms will void the warranty Please refer to our Super MCX SSA or Super MPX SSA if you are using these platforms. Package Contents: Geissele SSA X w/ Lightning Bow Trigger What firearm models does the manufacturer say Geissele Ssa X w/ Lightning Bow Trigger is compatible with? The manufacturer says that Geissele Ssa X w/ Lightning Bow Trigger is compatible with AR-15 AR-10Geissele 05-959: SSA X w/ Lightning Bow Trigger 4.25 - 4.75 lb Black