The Sprinco USA Spring Kit (Sprinco part no. 25002) bundles a standard-rate buffer spring with a heavy-duty 5-coil extractor spring, addressing two of the most common AR-15 fatigue points in one purchase. The buffer spring returns the bolt carrier group to battery, while the 5-coil extractor spring adds tension behind the extractor claw for a firmer grip on the case rim during extraction.

Key Specifications

• standard-rate buffer spring returns the bolt carrier group to battery after each cycle.
• heavy-duty 5-coil extractor spring adds tension behind the extractor claw for firmer case-rim grip.
• sold as a two-part kit addressing both springs in a single purchase.

Frequently Asked Questions

What does this kit include? A standard-rate buffer spring plus a heavy-duty 5-coil extractor spring.

Why upgrade the extractor spring? A weak extractor spring is a common cause of failures to extract; the 5-coil design adds tension for a firmer grip on the case rim.

Buy the Sprinco Buffer & Extractor Spring Kit

Refresh both the buffer spring and extractor tension on an AR-15 in one order. Browse more of our rifle parts selection and order from our Lubbock, Texas gun shop.