MGI's D-Fender "D-Ring" can assist in eliminating extraction problems in the M16/M4/AR-15. This High-Tech, composite "D-Ring" increases extractor spring force by 4x!
Installation is easy: slip the D-Fender over the factory extractor spring and insert and re-install, no gunsmithing or permanent alterations required.
Fits: AR-15/M-16, AR-18/AR-180, Daewoo 5.56, Daewoo 7.62x39, SA-80, Steyr Aug, Bushmaster M-17 Bullpup
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