AR-15 – Mil-Spec 6-Position Buffer Tube Assembly – ST-T2 Heavy Buffer – Black
PLEASE DOUBLE CHECK DETAILS AND FITMENT BEFORE PURCHASE.
Spike’s Tactical built this AR-15 buffer tube assembly as a complete mil-spec carbine receiver extension setup for builders who want the core stock hardware done right in one shot. Verified retailer and manufacturer listings for SLA500R-K show a mil-spec 6-position tube, ST-T2 heavy buffer, buffer spring, castle nut, and end plate in one black-finish assembly.
The source line says “rifle,” but current manufacturer and retailer listings for this exact SKU show a carbine-style 6-position mil-spec assembly. So don’t let bad distributor wording drag you into a return. Verify your stock and receiver extension setup before you buy.
Fitment
- Fits AR-15 pattern lower receivers that use a mil-spec carbine receiver extension setup
- Built around a mil-spec 6-position carbine buffer tube
- Works with stocks designed for mil-spec carbine buffer tubes
Does NOT fit
- Not a fixed rifle-length receiver extension assembly
- Not for commercial-spec carbine stocks
- Not the right buy for AR-10 / LR-308 setups unless the builder has separately verified compatibility
What it does
This kit gives the builder the main lower rear-end hardware needed to finish out a collapsible-stock AR-15 lower. It provides the receiver extension, spring, heavy buffer, end plate, and castle nut so the buyer is not piecing together a buffer system one headache at a time.
Why it’s worth it
This is a quality-name buffer assembly with a heavier ST-T2 buffer already in the mix, which makes it more appealing than bargain kits that save a few bucks by giving you mediocre parts and vibes. It is a solid shelf item for AR builders who want Spike’s hardware and a mil-spec carbine setup from the jump.
Specs
- Platform: AR-15
- Type: Mil-spec carbine buffer tube assembly
- Receiver extension: 6-position mil-spec
- Finish: Black
- Buffer: Spike’s Tactical ST-T2 heavy buffer
- Buffer spring: 17-7 stainless steel
- Includes castle nut and end plate
- Tube feature: Dry lube film
- Tube feature: Laser-engraved position markings
What’s included
- 6-position mil-spec buffer tube
- Spike’s Tactical ST-T2 heavy buffer
- Buffer spring
- Castle nut
- End plate / latch plate
Install notes
Use the right castle nut wrench, stake the castle nut correctly if the build calls for it, and verify stock compatibility with a mil-spec tube. This is not the place for guesswork and “close enough” energy.
Verify before you buy
Verify that your build needs a mil-spec carbine receiver extension, not a rifle-length setup and not a commercial-spec tube. Also verify your stock is made for mil-spec dimensions.
⚠ 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.
