TACFIRE BU-556-10 PISTOL UPPER ASSEMBLY 5.56X45MM NATO CALIBER WITH 10" BLACK NITRIDE BARREL, BLACK ANODIZED 7075-T6 ALUMINUM RECEIVER & M-LOK HANDGUARD FOR AR-PLATFORM INCLUDES BOLT CARRIER GROUP
The Spike's Tactical Carbine Buffer Spring is a Mil-Spec 17-7 stainless steel buffer spring that features an electro polish finish to give it a smoother quality look and feel.
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SPIKES SLA501S CARBINE BUFFER SPRING STAINLESS STEEL MIL-SPEC