AR-15 – Heavy Carbine Buffer – ST-T3 – 5.5 oz
PLEASE DOUBLE CHECK DETAILS AND FITMENT BEFORE PURCHASE.
Spike’s Tactical built the ST-T3 as the heavy hitter in this family for AR-15 carbines that need more buffer mass than a T1 or T2. It uses an aluminum body, black anodized finish, mil-spec bumper, and sliding solid tungsten internal weights in a maintenance-free carbine buffer setup.
This is the heavyweight option of the bunch. Good for guns that need more control, not for random guess-buying because heavier sounds cooler.
Fitment
- Fits AR-15 platforms using carbine-length receiver extensions
- Compatible with mil-spec and commercial carbine receiver extensions
- Direct drop-in replacement for standard carbine buffers
Does NOT fit
- Not for rifle-length receiver extension systems
- Not the right choice for buyers wanting the lighter ST-T1 or middle-weight ST-T2
- Not for proprietary recoil systems unless separately verified
What it does
The ST-T3 adds the most mass of the three and is intended to slow bolt carrier velocity more aggressively, reduce bolt bounce, and help tame over-gassed or hard-running carbines.
Why it’s worth it
This is the buffer for the buyer who actually needs more weight, not the guy collecting parts by vibes. It gives a legit heavier option from a known brand without wandering into weird gimmick territory.
Specs
- Platform: AR-15
- Type: Heavy carbine buffer
- Model: ST-T3
- Weight: 5.4–5.5 oz
- Length: 3.25 in
- Material: Aluminum
- Finish: Black anodized
- Internal weights: Sliding solid tungsten weights
- Bumper: Mil-spec
- Maintenance free
- Made in USA
- Lifetime warranty
What’s included
- 1 Spike’s Tactical ST-T3 heavy carbine buffer
Install notes
The ST-T3 is best sold to buyers who know why they want a heavier buffer. Great for taming certain carbines, but dumb as a blind recommendation for every rifle on earth.
Verify before you buy
Verify that your rifle uses a carbine-length receiver extension and verify that you want the ST-T3 model specifically. This is the heaviest of the three and should be chosen on purpose.
⚠ Trademark & Compatibility Disclaimer
IronKells Armory LLC is not affiliated with, endorsed by, or sponsored by any manufacturer mentioned. All trademarks are the property of their respective owners and are used only to identify compatibility or fitment.
⚠ Install & Compatibility Disclaimer
Installation should be performed by a qualified armorer or gunsmith. Improper installation, modification, or use may affect firearm safety and reliability. Buyer is responsible for verifying compatibility, performing proper function testing, and ensuring safe operation.
