Cross Armory 4-Pin Set for Glock Gen4 offers precision-engineered performance built from durable 4140 ordnance steel with a corrosion-resistant finish. Specially designed for Glock Gen4 models including those with extended backstraps this dimpled pin set features enhanced geometry for seamless ergonomics and quicker installation. Compatible with Glock 17 19 20 21 22 23 26 27 29 30 31 32 33 34 35 40 and 41 Gen4 it ensures versatility without interfering with holsters for concealed carry. Upgrade your Glock with reliability and toughness you can count on.