Sig Sauer MCX Handguard Link Screw. Constructed from steel and sporting a black coated finish, this firing pin lock plunger is for the Sig Sauer MCX rifles chambered in .223, 5.56x45mm and .300 Blackout. The firing pin lock plunger is inserted into the firing pin lock spring and functions by providing a contact point for the firing pin lock.
- Caliber: .223 Rem,5.56x45mm,.300 Blackout
- Finish / Color: Black
- Firearm Type: Rifle
- Material: Steel
- Models Fit: Sig Sauer MCX
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