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Lead & Steel 4140 Nitride Quality AR-15 Gas Block Up to 50% Off — 2 models

Lead & Steel 4140 Nitride Quality AR-15 Gas Block, 0.625in, Black, 20245
Lead & Steel 4140 Nitride Quality AR-15 Gas Block, 0.750in, Black, 122123
Lead & Steel 4140 Nitride Quality AR-15 Gas Block, 0.625in, Black, 20245
1 of 2 images
Lead & Steel 4140 Nitride Quality AR-15 Gas Block, 0.625in, Black, 20245
Lead & Steel 4140 Nitride Quality AR-15 Gas Block, 0.750in, Black, 122123
2 of 2 images
Lead & Steel 4140 Nitride Quality AR-15 Gas Block, 0.750in, Black, 122123

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14% OFF Gun Parts

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Product Info for Lead & Steel 4140 Nitride Quality AR-15 Gas Block

The Lead & Steel QGB is CNC-machined from 4140 carbon steel, with a consistent ID to provide a similar thermal expansion coefficient to the barrel.image

Each gas block is individually gauged before being nitrided. If you want peace of mind, look no further than the QGB!

Specifications for Lead & Steel 4140 Nitride Quality AR-15 Gas Block:

Manufacturer: Lead & Steel
Color: Black
Coating: Nitride
Fabric/Material: CNC Machined
Gun Make: AR Platform
Gun Model: AR-15
Weight: 3 oz

Package Contents:

  • Lead & Steel 4140 Nitride Quality AR-15 Gas Block
  • 2 gas block screws

What firearm models does the manufacturer say Lead & Steel 4140 Nitride Quality AR-15 Gas Block is compatible with?

The manufacturer suggests that Lead & Steel 4140 Nitride Quality AR-15 Gas Block is compatible with AR-15

Lead & Steel 4140 Nitride Quality AR-15 Gas Block Orderable Models

List of Orderable Models

  • Lead & Steel 4140 Nitride Quality AR-15 Gas Block, 0.625in, Black, 20245 , MPN: 20245 , UPC: 7427053012720 , Code: 5Z0-RGB-LSRDS15-20245
  • Lead & Steel 4140 Nitride Quality AR-15 Gas Block, 0.750in, Black, 122123 , MPN: 122123 , UPC: 7427053012041 , Code: 5Z0-RGB-LSRDS15-122123
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Last updated 2026-07-05 UTC.