Remington 870 M4 Style Adjustable Stock Conversion Kit – Mil-Spec Buffer Tube Upgrade

Upgrade your Remington 870 shotgun with this premium M4 Style Adjustable Stock Conversion Kit. Designed to replace the factory buttstock, this kit allows you to install a Mil-Spec M4-style collapsible stock, providing improved ergonomics, customizable length of pull, and enhanced control.

Length of Pull range:

Adjusts from 9″ to 13.250″

Whether you’re configuring your shotgun for home defense, tactical applications, competition, or range use, this conversion kit offers a rugged and reliable upgrade. The adjustable stock accommodates shooters of different sizes and makes it easier to use the shotgun while wearing body armor or heavy clothing.

Manufactured from durable materials for long-lasting performance, the kit installs using the factory stock mounting location and provides a solid foundation for any Mil-Spec compatible M4 stock. Its tactical design improves handling while maintaining the proven reliability of the Remington 870 platform.

Features of the

• Converts a Remington 870 shotgun to accept a Mil-Spec M4-style adjustable stock
• Replaces the factory Remington 870 buttstock
• Mil-Spec buffer tube compatibility
• Adjustable length of pull for improved comfort (9″ to 13.250″)
• Durable construction for hard-use applications
• Enhanced ergonomics and weapon control
• Ideal for tactical, defensive, competition, and recreational use
• Compatible with most Mil-Spec AR-15/M4 stocks

Compatibility

• Remington 870 (12 Gauge models with standard stock attachment)

Note: Stock shown (if applicable) may vary depending on the selected configuration. Always verify compatibility before installation.

Legal Compliance Notice

It is the purchaser’s sole responsibility to know and comply with all applicable federal, state, and local laws regarding the purchase, ownership, possession, installation, and use of this product. By purchasing this item, the buyer certifies that they are legally permitted to purchase, own, possess, and use it in their jurisdiction.

Three Oaks Tactical makes no representation or warranty regarding the legality of this product in any specific location and assumes no responsibility or liability for its misuse or for the purchaser’s failure to comply with applicable laws and regulations. If you are uncertain about the legality of this product where you reside, consult your local law enforcement agency or qualified legal counsel before placing your order.