Enhanced 417 Magazine +4 Baseplate

ETA July 2026

Our Enhanced Magazine Baseplate is designed for 10 and 20 Round Factory HK 417 and MR762 Magazines. Machined from billet 7075-T6 aluminum and finished with Type III hardcoat anodizing, it increases the capacity of standard 10 or 20-round magazine by 4 rounds.

Built with aggressive geometry and pronounced knurling, it improves dexterity and control during reloads. A drain channel on the underside supports maritime use.

For a clean, refined appearance, the Baseplate is retained internally by a custom stainless steel retaining pin. A steel security screw is then installed over the retaining pin to further ensure reliability under hard use.

Complimentary Personalization: Add up to 4 characters of custom engraving to your magazine Baseplate at no additional cost. Please allow 5 business days for engraving and fulfillment. If ordering multiple Baseplates with different engraving, add them to your cart one at a time.

*Installation Instructions:*

1. Only compatible with HK MR762 and HK 417 20 & 30 Round magazines. Ensure the magazine is unloaded.
2. Remove the OEM baseplate and keep the bottom spring plate attached to the spring.
3. Depress the spring and slide the Enhanced Baseplate onto the magazine.
4. Install the stainless steel retaining pin and torque to 0.5 Nm.
5. Install the stainless steel security screw using blue Loctite. The magazine is now ready to use.

-Magazine not included-

Note: This is an aftermarket product manufactured by Shadow Strategic LLC. Shadow Strategic LLC is not affiliated with, endorsed by, or sponsored by Heckler & Koch. Heckler & Koch®, HK®, MR762®, and HK417® are trademarks or registered trademarks of Heckler & Koch.

Tan anodizing naturally varies in shade, tone, and finish from part to part and batch to batch. Colors may range from champagne, bronze, gold, FDE, tan, brown, gray-tan, or greenish-tan, and may include darker lines, streaking, rack marks, or other cosmetic variation. These differences are cosmetic only and do not affect fit, function, strength, or performance. By purchasing, you acknowledge that color variation is normal and not eligible for refunds, exchanges, credits, or color-matching requests.

Shadow Strategic does not ship restricted products where prohibited by state or local law. Orders to the following jurisdictions may be canceled, limited, or require additional review before shipment:

CA, CO, CT, DC, DE, HI, IL, MD, MA, NJ, NY, RI, VT, WA