Cryptic Bolt Carrier Group BCG - Complete .223/5.56/.300 AAC Blackout Left Hand Magnese Phosphate

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Cryptic Coatings Cryptic Bolt Carrier Group BCG - Complete .223/5.56/.300 AAC Blackout Left Hand Magnese Phosphate - Bolt Carrier Group for AR-15 - view 1
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Cryptic Coatings

Overview

The Cryptic Bolt Carrier Group is designed for .223 Wylde caliber rifles, providing versatility for both .223 Remington and 5.56 NATO ammunition. With its phosphate finish, this BCG offers a robust surface treatment that enhances durability and resistance to wear, making it a reliable choice for consistent performance in various shooting conditions. This component is often found in left-hand builds, catering to shooters who prefer a southpaw configuration for enhanced ergonomics.

Specifications

MPNCC0104LH
Caliber.223 Wylde
FinishPhosphate

Available Merchants(1)

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$120

Build history on GunPartPicker

Builders on GunPartPicker first added the Cryptic Bolt Carrier Group BCG - Complete .223/5.56/.300 AAC Blackout Left Hand Magnese Phosphate to a build in June 2026.

Availability is good: it was in stock at one retailer or another nearly every day in September 2026, but today the one retailer we track is out of stock. Prices barely moved in September 2026, holding around $119.99, so there haven't been real sales lately. Listed prices start at $119.99 at Optics Planet for when it comes back.

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