Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group BCG Mystic Midnight
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Cryptic Coatings
Overview
The Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Bolt Carrier Group is designed for reliability in the 5.56 NATO caliber. Its low mass construction and DLC finish not only enhance performance by reducing recoil and improving cycling speed but also provide durability against wear and corrosion. This BCG is commonly found in lightweight builds where minimizing weight while maintaining function is crucial.
Specifications
Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group BCG Mystic Midnight
Build history on GunPartPicker
Builders on GunPartPicker first added the Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group BCG Mystic Midnight to a build in April 2026.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today the one retailer we track has it in stock. Prices barely moved in August 2026, holding around $256.99, so there haven't been real sales lately. Buying today, the lowest price is $256.99 at Optics Planet, which matches the best price we saw in August.
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