Spring Service Pak XP Colt CAR15/M4

Caliber .223Rem and/or 9mmLuger(Para), Rifle Colt Model CAR-15, AR15, AR16 Sporter, M4, SMG .223 and/or Carbine, Spring Service Pak XP-Extra Power 15piece, each 1x action or recoil spring XP-Extra Power fits not AR15 caliber .223Rem, bolt catch spring, buffer retainer spring, extractor spring, forward assist spring, front sight detent spring, hammer spring, magazine catch spring, takedown pin detent spring, charging handle latch spring, trigger spring, disconnector spring, dust cover spring, ejector spring and safety detent spring, Code 30451 Wolff Gunsprings USA. These Rifle Service Spring Packs contain the most common springs for each rifle to restore function and reliability. A perfect upgrade for CMP or any military rifle - professional installation recommended!