Save $1.86

BKF AR15 Sprinco Enhanced Power Carbine Spring (Blue) W/ BKF H2 Buffer (4.7oz)

(24 customer reviews)


37 in stock (can be backordered)



All of our springs are constructed from Certified Chrome Silicon wirestock to ISO 9001:2008 quality standards to withstand extreme heat and highly cyclic rate. The certification rating ensures a consistency in the parent material of 95%, which translates to repeatable consistency in performance & function. Certified Valve Quality Chrome Silicon wire is used in very high stress applications such as, NASCAR, Formula One, Moto GP & Pro Stock racing motor valve springs. It is not uncommon in some of these applications for valve springs to see 15,000,000 compression cycles in one race. It is this extraordinary capability that makes Chrome Silicon wire the obvious choice in our spring production vs. music wire or 17-7 PH used in OEM springs and by most aftermarket competitors. In addition, all of our Chrome Silicon buffer springs are heat treated, stress relieved, and dual-stage shot peened in separate post winding treatments. We also treat each spring with a proprietary, deep-penetrating, Re-Micronized (to .3 Micron particle size), inhibited, Molybdenum-Disulfide (MoS2) formulation to eliminate 90% of all mechanical wear on the spring. The combination of materials & processes result in a loss of no more than 5% in spring efficiency. The minimum anticipated duty cycles of our buffer spring designs are in excess of 1,500,000 cycles.


  • ASTM Grade A877 Certified Valve Quality Chrome Silicon Wirestock
  • Heat Treated, Stress Relieved and Dual Stage Shot-Peened post winding (Our springs really ARE shot-peened)
  • Impregnation / Plating with Re-Micronized Molybdenum Disulfide formulation
  • Hard plastic tube packaging for protected transport and easy storage
  • Optional Cryogenic Processing available upon request


  • Shortened “lock time” for faster sight recovery and platform stability
  • Consistent spring pressure throughout the duty cycle of the spring, resulting in fewer malfunctions related to spring operation. (Especially Type III malfunctions)
  • Improved & consistent cyclic operation. Spring will not change performance for many hundreds of thousands of rounds.
  • Greater resistance to heat induced performance degradation
  • Reduced cyclic rate with Enhanced or Extra Power springs and reduce / eliminate bolt bounce with optimal spring / buffer weight selection.
  • Reduced operating cost as replacement springs are not needed during the life of your upper receiver assembly. Less downtime and fewer trips to the armorer for spring replacement, in fact, this will most likely be the only buffer spring you will ever need for the duty cycle of your carbine or rifle!
  • Correct spring selection works reliably, consistently, and virtually indefinitely in all properly built and maintained AR platforms.


  • H2 Carbine buffer W/ Tungsten Weights(2) and Steel Weight (1).
  • Sprinco Enhanced Power Buffer spring (Blue)
  • Made in the USA

Sprinco Spring:

  • BLUE: Medium “Enhanced” Power Spring

A slight increase in spring power makes this spring suited for rack grade weaponry with normal operation parameters. 16″ rifles with mid-length gas systems, short barreled rifles with carbine length gas systems, etc.

H2 Buffer:

The H2 Buffer is a heavy buffer designed to reduce felt recoil,  as well as reduce the cycling rate on full-auto rifles. It is designed to mil-spec standards for use in AR15 carbines with a collapsible buttstock. Weight: 4.7oz.

Additional information

Weight .75 lbs
Dimensions 10 × 4 × 2 in

24 reviews for BKF AR15 Sprinco Enhanced Power Carbine Spring (Blue) W/ BKF H2 Buffer (4.7oz)

  1. Tri (verified owner)

    I appreciate the candor and the thoughtful advice. I ordered enough buffers and springs for all of my equipement. I also like the personal follow up to my order.

  2. Rohan (verified owner)

    Ordered 2 of them, got them fast and they fixed the problems I had.

  3. Michael (verified owner)

    I was happy to finally find the Springco spring bundled with a heavy buffer. Blake answered my question quickly on which one to go with for a specific build.

  4. Evan (verified owner)

    Same as above but for wife’s rifle. Dialed in with SA adjustable gas block. A lot of recoil mitigated.

  5. jon almlie (verified owner)

    good service

  6. Clayton (verified owner)

    Very nice buffer and spring

  7. Trent R. (verified owner)

    Great prices, fast shipping, cool dude ect…

  8. Jeremy (verified owner)

    Excellent combo

  9. Michael R. (verified owner)

    The Blue spring and H2 Buffer solved my inconsistent cycling issue I had on my Radical Firearms 50 Beowulf. Super Fast Shipping! Will buy again from B King

  10. Tonya C. (verified owner)

    Have not installed yet first time buying sprinco spring heard lots good things about them

  11. Eric Harrison (verified owner)

    Ordered from bk shipped same day! got my spring and buffer in two days!! will definitely order from again!!

  12. Delton T. (verified owner)

    Shipped fast and was a great deal with the buffer.

  13. John S. (verified owner)

    Quality pieces that work great in my BK build

  14. Shawn Y. (verified owner)

  15. Randall (verified owner)

  16. Jordan (verified owner)

    Great product from a great veteran owned company! Shipping was quicker than expected and was able to get my build completed sooner than I expected. Would definitely recommend B. Kings to anyone who is looking for parts to start or finish a build!

  17. Anonymous (verified owner)

    Worked great on my 11.5″ barreled AR pistol!!

  18. George Potter (verified owner)

  19. Quentin B. (verified owner)

    Product showed up fairly quick. Packaged well and works as intended.

  20. Scott (verified owner)

    Fast shipping. Quality two of them. Thanks

  21. Chris L. (verified owner)

    Fast shipping. Great product. Love to support a semi local company. This isn’t the first and last order I will be placing.

  22. Justin H. (verified owner)

    This kit works perfectly and got my AR in 22 Nosler to cycle better.

  23. Alexander (verified owner)

    Quick shipping and came as described. Very pleased

  24. Edward HO (verified owner)

Only logged in customers who have purchased this product may leave a review.