Kimber 1911 Recoil Spring Replacement Guide

1911 Recoil spring

1911 Recoil spring

The recoil spring on any semi-automatic gun is critical to the proper performance of the firearm. Each spring has a particular rating relating to how many pounds of force it takes to compress it by one inch. When a spring undergoes many compressions over time, it will become weaker.

Springs wear out and need to be replaced at a particular interval to avoid issues with the recoil operation of your gun. When a recoil spring starts to become weak, it may cause malfunctions as the timing of the slide cycle will be off. The weak spring will allow the slide to travel backwards too fast, possibly resulting in stovepipes, or Type 2 malfunctions. It is also possible that the gun will not go into battery, and will not fire as a result.

It is best to avoid these potential issues by replacing your recoil spring at the manufacturers recommended interval. See my tutorial on How to Replace a Recoil Spring on a Kimber Pro Carry 1911.

A 1911, when operating properly, should eject spent brass and throw it about 6-8 feet to the right and slightly to the rear (unless you have a left-handed gun). If it throws the brass further, this indicates the slide is moving too fast, thus throwing the brass with more momentum. This can be indicative of a weak spring.

I have collected information for Colt, Armscor and Kimber 1911 models in several calibers and barrel lengths.It is important to use the correct recoil spring on your firearm.

Here is a recoil spring replacement guide to help you know how often to replace the recoil and other springs in your 1911 pistol. I will be adding new manufacturers and information as I get it.

ManufacturerCaliberGun ModelBarrel LengthRecoil Spring Replacement IntervalRecoil Spring Rating lbs
Armscor -Rock Island.45 ACPFull Size5"1,500- 2,000 Rounds18
Armscor -Rock Island.45 ACPMid Size4.25"1,500- 2,000 Rounds20
Armscor -Rock Island.45 ACPCompact Size3.5"1,500- 2,000 Rounds24
Armscor -Rock Island.40 Full Size5"1,500- 2,000 Rounds16
Armscor -Rock Island.40 Mid Size4.25"1,500- 2,000 Rounds20
Armscor -Rock Island.40Compact Size3.5"1,500- 2,000 Rounds20
Armscor -Rock Island9mmFull Size5"1,500- 2,000 Rounds12
Armscor -Rock Island9mmMid Size4.25"1,500- 2,000 Rounds14
Armscor -Rock Island9mmCompact Size3.5"1,500- 2,000 Rounds16
Armscor -Rock Island10mmFull Size5"1,500- 2,000 Rounds20
Colt.45 ACPGovernment Model5"1,500- 2,000 Rounds16
Colt.40Government Model5"1,500- 2,000 Rounds19
Colt.38 SuperGovernment Model5"1,500- 2,000 Rounds14
Colt9 mmGovernment Model5"1,500- 2,000 Rounds14
Colt.45 ACPCommander Series4.25"1,500- 2,000 Rounds18
Colt.38 SuperCommander Series4.25"1,500- 2,000 Rounds16
Colt9 mmCommander Series4.25"1,500- 2,000 Rounds16
Armscor -Rock Island10 mmMid Size4.25"1,500- 2,000 Rounds24
Kimber10 mmCustom/Target Models5"1,500 Rounds18.5
Kimber9 mmCustom/Target Models5"1,800 Rounds12
Kimber.38 SuperCustom/Target Models5"1,800 Rounds14
Kimber.45 ACP, .40Pro/Compact Models4"800 Rounds22
Kimber.38 SuperPro/Compact Models4"800 Rounds20
Kimber9mmPro/Compact Models4"800 Rounds14
Kimber.45 ACP (outer spring)Ultra Models3"1,50018
Kimber9mm (outer spring)Ultra Models3"1,50016
KimberAll Calibers (inner spring and guide rod assembly)Ultra Models3"5,00019