Sons of Liberty Gun Works Blaster Starter Kit Black. (not to be confused with MIM parts in the commercial market) Our Safety and Takedown Pivot Detents are solid hardened Stainless Steel from KNS Precision Machine. SOLGW Magazine catch and Takedown Pivot Pins are machine from Mil-Spec AISI8620 per the USGI TDP heat treated and coated per mil spec. Our Mag Buttons are made from steel per Mil-Spec versus the aluminum found in the majority of commercially available LPKs on the market. Specifications for Sons of Liberty Gun Works Blaster Starter Kit: Manufacturer: Sons of Liberty Gun Works Color: Black Fabric/Material: Stainless Steel Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Trigger Pin Size: Mil-Spec Condition: New Package Contents: Sons of Liberty Gun Works Blaster Starter Kit Sons of Liberty Gun Works BSK: Blaster Starter Kit Black