Tippmann Arms M4-22 Firing Pin Black. Specifications for Tippmann Arms M4-22 Firing Pin: Manufacturer: Tippmann Arms Gun Model: M4 Color: Black Package Contents: Tippmann Arms M4-22 Firing Pin What firearm models does the manufacturer say Tippmann Arms M4-22 Firing Pin is compatible with? The manufacturer says that Tippmann Arms M4-22 Firing Pin is compatible with M4Tippmann Arms AF01047: M4-22 Firing Pin Black