Spike's Tactical ST-9X 9mm Heavy Buffer

Manufactured by Spike's Tactical
Manufactured by Spike's Tactical
3 Reviews

In Stock

NOTE: Limit 3 per household. Quantities exceeding 3 will not allow checkout.

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The Spike's Tactical ST-9X 9mm Stainless Steel Heavy Buffer is an extended length dedicated 9mm buffer for use in a carbine receiver extension. Its extended length helps to eliminate the problem of breaking bolt catches.

  • 303 stainless steel
  • Raw finish
  • Laser etched Spider logo
  • Weight: 7.7 oz

This buffer will smooth out the firearm, making it more reliable, and decrease the amount of gas in your face when shooting suppressed.
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BrandSpike's Tactical
TypeBuffer - 9Mm
Weight7.7 Oz

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

Ratings & Reviews

3 reviews

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Great Quality

by -

Purchased this for a Colt AR9. 16in barrel. Both subs and regular ammo. Functions amazing. This buffer is great quality. I paired it with a JP Tuned heavy buffer.

Perfect for AR-9 pistols


I have used this buffer in 16" carbines and in several 7.5" Rock River 9mm ARs. It shortens the bolt travel significantly. The most important thing is that it greatly reduces muzzle rise. It has held up through hundreds of rounds.



My original buffer was too short and not heavy enough. I switched to the ST-9X and it solved all my cycling issues. After a few hundred rounds in, the ST-9X remains flawless. Well worth the money.