4 Rail Gas Block for AR15 / M4
4 Rail Gas Block for AR15 / M4
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This gas block replaces your existing front sight and allows the user to mount accessories to its four picatinny rails. This gas block can be mounted by the use of set screws (included). Purchase our dovetail mounted flip front sight (or our solid front sight to retain your iron sights. Made from high quality steel and finished with a mil. spec. phosphate coating. Fits standard .750" barrels. By Yankee Hill

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