Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group BCG Mystic Silver

Name: Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group BCG Mystic Silver
Brand: Cryptic
Availability: InStock

Cryptic · Bolt Carrier Group

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Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group BCG Mystic Silver

Best price

$296.40at OpticsPlanet

In stock Sale checked Nov 13, 2026

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Fits and works with

Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups

Specifications

Manufacturer: Cryptic
Platform: AR-15
Caliber: 300 Blackout
Material: Steel
Weight: 8.2 oz

Where to buy

Store	Price	Availability	Buy	Add to build
OpticsPlanet Best price	$296.40Salechecked Nov 13, 2026	In stock	Buy at OpticsPlanet
AR15Discounts 5% off	$296.40checked Nov 13, 2026	Check store	Buy at AR15Discounts

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

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Lowest in-stock price in the last 30 days: $256.99 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 12, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
AR15Discounts	$296.40	$296.40	$296.40
OpticsPlanet	$296.40	$256.99	$296.40

Since Oct 12, 2026.

About this part

The Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group BCG Mystic Silver is an AR-15 bolt carrier group from Cryptic. It's sold by 2 stores, all at $296.40. The lowest in-stock price in the last 30 days was $256.99 at OpticsPlanet.

From the manufacturer

Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group BCG Mystic Silver. Carrier is machined from Mil-Spec 8620 tool steel with shrouded firing pin and Mil-Spec chrome lined interior. BCG includes the Mil-Spec chrome lined and heat treated gas key. Gas key is sealed then secured to carrier with Grade 8 fasteners and properly staked per Mil-Specs. This ensures proper gas system functioning. The bolt assembly is CNC machined from Mil-Spec Carpenter No. 158 steel then shot peened for increased strength per Mil-Spec; includes tool steel extractor with Wolff spring viton O-ring black insert; tool steel ejector pin spring; firing pin chromed finished with firing pin retaining pin and cam pin. Total weight completely assembled 8.2oz. HPT (High Pressure Batch Tested) and MPI (Magnetic Particle Inspected). Specifications for Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group (BCG): Manufacturer: Cryptic Fabric/Material: Carpenter 158 Steel 4140 Billet Tool Steel Caliber: 5.56x45mm NATO .223 Remington .300 AAC Blackout Gun Make: AR Platform Gun Model: M16 M4 AR-15 Hand: Right Weight: 8.2 oz Features of Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group (BCG) Mil-Spec CNC Machined from 8620 Tool Steel case hardened to 58 60 rockwell with chrome lined interior Mil- Spec Chrome Lined Gas Key Key Staked with Grade 8 Screws per Mil-Spec Mil-Spec Carpenter 158 Bolt Mil-Spec Ejector w/ Spring Mil-Spec Extractor w/ Wolff Spring viton O-ring and insert Mil-Spec Firing Pin w/ Chrome Finish Mil-Spec Cam Pin BCG Weight 8.2oz. Package Contents: Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group What firearm models does the manufacturer say Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group (BCG) is compatible with? The manufacturer suggests that Cryptic .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group (BCG) is compatible with AR-15 M4 M16Cryptic CC-LMS-0103: .223 / 5.56 / .300 AAC Blackout Low Mass Steel Bolt Carrier Group Mystic Silver