Hardened & Cryo Treated, Improves Performance
Cryogenically processed, stress relieved and hardened steel rod offers no-flex cycling that reduces spring bind, helps ensure reliable feeding and ejection. Fits the small I.D., flat wire, factory and aftermarket springs with no modifications or alterations.
Big Book Catalog, Issue:65, Page:203
New Product Supplement, Issue:534, Page:000
SPECS: 4140 steel, black, matte finish. Hardened to Rc 32-24. Glock 17 fits; 17, 17L, 22, 24, 31, 34, 35. Glock 21 fits; 20, 21. Does not include recoil spring – uses the small I.D. flat wire factory and aftermarket springs.