JE Machine Tech Slide Firing Pin Channel Liner Glock Black. Not necessary or compatible with the Glock 42 or 43. DISCLAIMER: This product is not manufactured authorized endorsed or warranted by GLOCK. GLOCK does not affirm or guarantee the compatibility of this product with GLOCK pistols. Specifications for JE Machine Tech Slide Firing Pin Channel Liner: Manufacturer: JE Machine Tech Color: Black Gun Make: Glock Features of JE Machine Tech Slide Firing Pin Channel Liner Will fit all Glocks.Not necessary or compatible with the Glock 42 or 43. Package Contents: JE Machine Tech Slide Firing Pin Channel Liner JE Machine Tech TS-SPKG-FPCL2: Slide Firing Pin Channel Liner Glock Black