We recommend replacing the recoil spring on a Government 1911 every 2,000 rounds; on a Commander 1911 every 1,500 rounds; and on an Officer 1911, every 500 rounds.
What hammer spring weight should I use in my 1911?
On a Government frame, we recommend using a 19# weight for .45 ACP and a 17# weight for 9mm.
On a Commander frame, we recommend using a 21# weight for .45 ACP and an 18# weight for 9mm.
For our T4 model, we recommend an 18# weight, while a contoured carry cut 1911 in .45 ACP will take a 23# weight spring.
What are the standard sight heights?
Government .45 ACP: .190”
Government 9mm: .180”
Commander 9mm & .45 ACP: .180”
What is included in the Reliability Enhancement Package?
Polish, radius, and tune extractor
Adjust ejector for positive ejection if needed
Polish the breech face
Check the slide stop
Throat the barrel/polish chamber and throat
Adjust feed ramp angle and polish feed ramp
Change recoil spring
Check magazine release to be sure magazines drop free
Test fire for function and reliability (20 rounds)
**Any parts that need to be replaced must be approved by customer prior to work being performed
What is the thread size for my barrel?
.45 ACP: .578 x 28
9mm: .500 x 28
Can you remove the Series 80 safety from my 1911?
Yes, we can. We will insert a replacement spacer. No additional charge. A waiver needs to be signed by the customer to waive Nighthawk Custom of any liability.
*Can only be done with Match Grade complete trigger job
What is the recommended recoil spring for my 1911?
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