G&P Stoner 63 to M249 Box Magazine Adapter

G&P Stoner 63 to M249 Box Magazine Adapter

More capacity. More control. No compromises.

Upgrade your G&P Stoner 63 with the Bull Craft M249 Box Magazine Adapter, engineered for compatibility, weight reduction, and serious modularity. This adapter allows you to replace standard magazines with M249 box mags, unlocking higher sustained fire capability and access to robust, customizable internals.

Manufactured from SLS-fused Nylon12, the adapter is lightweight, extremely strong, and precision-fit for demanding use. Field-tested across diverse builds worldwide, it’s a proven solution for operators who want reliability without excess bulk.

🔧 Features & Compatibility

• ✅ Converts G&P Stoner 63 platforms to accept M249 box magazines
• ✅ Universal fitment for M249 mags and internal inserts
• ✅ Lightweight, rugged SLS-printed Nylon12 construction
• ✅ Precision-designed for seamless Stoner 63 integration
• ✅ Proven Bull Craft design—one of our original Stoner 63 innovations

⚠️ Compatibility Note:

Designed for airsoft M249 box magazines only.