Check the listing for details. WOLFF Glock Striker Spring 4, 4.5, 5, 5.5 or 6.. Color: Black, Condition: New. Listed at 7.00 USD. Brand New Made in the USA WOLFF Springs. May not ship in original packaging. Your choice of :Reduced Power 4 Lbs 16161Reduced Power 4.5 Lbs 30281Reduced Power 5 Lbs 30285Factory Standard Full Power 5.5 Lbs 32251Extra Power 6 Lbs 32247 Price is for One (1) Spring including shipping. Usually ships same or next day. Striker SpringsFits All Glock ModelsW. C. Wolff Company offers reduced power, factory standard, and extra power striker springs (firing pin springs) for Glock pistols. This spring will help improve the trigger pull. Reduced Power....: 4, 4.5 and 5 Lb.Factory Standard..: 5.5 Lb. Extra Power..........: 6 Lb Made in USA Warning: All springs except the 5.5 Factory Standard are for competition use only - not for duty use.Warning: Do not use extra power striker spring with reduced power recoil springs.Brand New Made in the USA WOLFF Springs. May not ship in original packaging. Your choice of :Reduced Power 4 Lbs 16161Reduced Power 4.5 Lbs 30281Reduced Power 5 Lbs 30285Factory Standard Full Power 5.5 Lbs 32251Extra Power 6 Lbs 32247 Price is for One (1) Spring including shipping. Usually ships same or next day. Striker SpringsFits All Glock ModelsW. C. Wolff Company offers reduced power, factory standard, and extra power striker springs (firing pin springs) for Glock pistols. This spring will help improve the trigger pull. Reduced Power....: 4, 4.5 and 5 Lb.Factory Standard..: 5.5 Lb. Extra Power..........: 6 Lb Made in USA Warning: All springs except the 5.5 Factory Standard are for competition use only - not for duty use.Warning: Do not use extra power striker spring with reduced power recoil springs.