AR-15 and CMMG 22LR conversion kit Bolt Carrier Group (BCG) Case v2

Meet the BCG Case — a compact, lightweight storage solution built for AR-15 Bolt Carrier Groups as well as CMMG 22LR conversion Kits. Version 2 improves on a number of V1's innovations: tighter tolerances and streamlined corners and edges to make inserting into and removing from pockets and bags easier. At roughly 3.5 oz, it’s easy to carry yet sturdy enough to protect your Mil-Spec BCGs chambered in 5.56, .233, and 300 AAC/Blackout as well as CMMG 22LR conversion kits. The textured exterior adds rigidity and gives you a confident grip when grabbing it from a safe or range bag.

Why it works

• Mil-Spec fit: Designed to work with all standard AR-15 BCGs and the CMMG 22LR drop in conversion kit.

• Compact & light: Small footprint so it won’t weigh down your gear but still protects the part inside.

• Textured exterior: Extra rigidity and a non-slip surface for easy handling.

Built to last

• Material: Printed in durable, heat-resistant ASA chosen to better tolerate hot-car conditions (sensitive above ~190°F).

• Water-resistant design: Interlocking lid helps keep moisture out — handy if the weather turns at the range.

• Corrosion resistance: Hardware is oxide-finished to reduce rust and wear.

• Made in the USA

Notes & care

• 3D-printed parts may show minor cosmetic imperfections; these do not affect fit or function.

• Resistant to everyday impacts and moderate use, but not indestructible (won’t survive being run over, falling from a high height, or struck with heavy force). Intended to be sacrificed before your BCG takes a hit.

• Water resistant, not waterproof — do not submerge.

Store your BCGs safely and neatly — in your safe, parts bin, or range bag — and reach for a purpose-built case when you need dependable protection on the go.