Armaspec ECB Kit in Black
$20.99 at GunMag Warehouse · 5 stores
In stock
Cs Spring Kit-XP Buffer W/ HD 5-Coil Bolt Extractor Spring
Sprinco USA · Buffer Tubes & Springs
No ratings yetBest price
$20.76at Battlehawk Armory
Sale checked Oct 1, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Battlehawk Armory Best price | $20.76Salechecked Oct 1, 2026 | Check store | Buy at Battlehawk Armory | |
| Palmetto State Armory | $23.59checked Oct 1, 2026 | Check store | Buy at Palmetto State Armory | |
| Brownells | $21.99checked Oct 1, 2026 | Out of stock | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Battlehawk Armory | $20.76 | $20.76 | $20.76 |
| Brownells | $21.99 | $21.99 | $21.99 |
| Palmetto State Armory | $23.59 | $23.59 | $23.59 |
Since Sep 28, 2026.
About this part
The Cs Spring Kit-XP Buffer W/ HD 5-Coil Bolt Extractor Spring is an AR-15 buffer part from Sprinco USA. It's sold by 3 stores, from $20.76 to $23.59.
Specifications
- Manufacturer
- Sprinco USA
- Type
- Buffer Kit
- Platform
- AR-15
From the manufacturer
Extra Power Buffer Spring. This was Sprinco's first AR buffer spring solution that they were tasked to design back in 2006 for a Force Modernization Team to specifically address spring-related M4 carbine reliability function issues for operating challenges in the Eastern Asia Theatre. The design loads of the Red spring are approximately 25% greater than the White spring for one of the considered Load Constants in the spring design. Refer to provided tuning procedure reference documents prior to calling for recommendations for use. The Red spring is commonly used in 9mm, 6.8 SPC, 6.5 Grendel, .450 BM, .450 SOCOM, .500 Beowulf, and Colt LE6920's specimen carbines, but certain spec Mfg: Sprinco Usa
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