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ERGO GRIPS
AR-15 RECEIVER EXTENSION CASTLE NUT
ERGO GRIPS AR-15/M16 M4 RECEIVER CASTLE NUT
Mfr Part: 4971-(B) 874748005333 Falcon Industries/ERGO brings this receiver extension castle nut for M4 style receiver extension tubes.
🔩 Upgrade your AR-15 with the ERGO GRIPS M4 Receiver Castle Nut! 🛠️ Precision-crafted from steel in sleek black. Perfect for buffer tube hardware. Shop now! 🌟
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