BCM Low Profile Gas Block for AR15" M16" M4" M4A1 for .750 barrels.
For use on AR-15, M16, M4 and M4A1
Phosphate finished machine steel
Barrel ID honed after finish per USGI TDP
Set screw mounting
Stock Notice: This item is NOT marked "In Stock". We will contact you within 12-24 hours by email if your order is on backorder with our distributor and will take longer than the 5-7 business days it takes us to ship out. Please do not order if you need this item shipped immediately.