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Any info from consumers or personal preference? I'm starting to learn that extractor steel, permatex sealing etc can vary quite a bit.
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I've had great results with both and most of the differences are more cosmetic than anything. WMD BCG's tend to be a little shinier, which I believe is due to their pre and post plating polishing technique. They also list more specs for their BCG's which I've copied & pasted below.
FailZero BCG's are no doubt a great competitor. Although they don't list their specs in detail, I suspect that they source their parts from some if not all of the same contractors. Both are top notch companies and provide a great product line. You really cant go wrong with either. They both have outstanding customer service and will have you covered in the slight chance that you ever do have an issue with their stuff.
WMD Guns BCG specs:
Bolt – Carpenter 158 heat-treated, shot peened and magnetic particle inspected. Manufactured to government drawings. Milspec gas rings. NiB-X coated (40% more wear-resistant than chrome).Extractor – Manufactured, heat treated, and hardened per government drawings. Black extractor buffer and heavy-duty spring. NiB-X coated.
Firing Pin – Manufactured, heat-treated, hardened, chromed and certified per government drawings.
Carrier – AR-15 or M16 style (heavy weight), 8620 material, heat treated and case hardened. Manufacturing tolerances on inside diameters tightly controlled. NiB-X coated for durability and ease of cleaning.
Gas Key – Hardened to USGI Specifications and attached using grade 8 hardened fasteners. NiB-X coated. Staked per military specifications.
Cam pin – Manufactured, heat treated, hardened and certified per Government drawings. NiB-X Coated.
Hammer - Manufactured, heat treated, hardened and certified per government drawings. NiB-X Coated. Can be semi-auto or full-auto