SBI 0.75" AR-15 Gas Block


No aluminium here... Steel is king. Our micro gas blocks are CNC machined 4140 steel with a gray parkerized finish.

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A 0.75" steel gas block for AR-15 rifles. Our gas blocks are installed using 2 set screws and securely attach to the barrel. This is a simple, robust, and reliable design.

Data sheet
4140 Steel
Specific References