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Spike’s Tactical ST-9X 9MM Heavy Buffer

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90 Day No-Hassle Returns We Pay Return Shipping

We have a 90-day no-hassle return policy. We pay return shipping.

If you need to request a return, contact us at support@at3tactical.com and we will send you a return label

After 90 days, defective items will still be covered under the manufacturer’s warranty, where applicable.

Please refer to the product listing for warranty details. If you have specific warranty questions, contact us at support@at3tactical.com. We may direct you to pursue your warranty claim directly with the manufacturer.

Your satisfaction is our #1 priority

If you’re dissatisfied with your purchase, in any way, please contact us at support@at3tactical.com – we will do our best to make it right.

Fast & Free Shipping On orders over $50

You will receive fast, free shipping for all orders over $50

Shipping cost is $7.99 for orders under $50. We ship with UPS or USPS, depending on the item.

Most orders received by 1pm CST ship the same day

You will receive an email with tracking information at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses. Orders placed on weekends, holidays, or after 1pm will ship the following business day.

The ST-9X is a Massive Upgrade for Your 9mm Build – Makes Your AR Smoother and More Reliable

The ST-9X has the right combination of length and weight. The extended length helps eliminate the problem of breaking bolt catches. CNC machined from high quality 304 stainless steel to a smooth finish. The buffer reduces noise and reduces recoil to almost zero. With this buffer, expect a smoother and a more reliable gun and a reduced amount of gas on your face when shooting suppressed.


  • Eliminates Bolt Bounce
  • Eliminates Noise
  • Controls Muzzle Rise in Full Auto Mode
  • Cuts Down Felt Recoil
  • 100% Maintenance Free


  • Material: 303 Stainless Steel
  • Finish: Raw
  • Weight: 7.7 oz

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