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Questions & Answers
Which sprinco spring work with the vltor a5 system?? Manufacturer Answer

The spring needed depends also on the platform its on. The A5 buffer tube is the same size as an AR10 carbine sized buffer tube. In an A5 buffer tube you can use .223 rifle springs with the A5 buffer, or .223 extra power springs. On an AR10 type weapon you can use a 3.25" buffer with an AR10 carbine buffer spring.

by Blitzkrieg Components, Manufacturer, December 3, 2024
Does it matter which end you install buffer ? I’ve bought the red spring, will the buffer go to red side ? Or it doesent matter. Manufacturer Answer

You can put the spring in either way.

by Blitzkrieg Components, Manufacturer, September 24, 2025
Customer Reviews
Helpful Positive Review
Reduced power for 300 AAC BO shooting by theorie, Verified Owner, February 16, 2021
Had some issues with cycling on my 300 AAC BO pistol (7.5"), even when suppressed. Figured out it was being caused by short cycling, so got one of these reduced power springs to remedy that. Worked like a charm and now the gun cycles reliably. Defini...
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13/13 found this helpful
Helpful Positive Review
Just what I needed to run my 300 BLK by BigDGA, Verified Owner, April 2, 2024
I was having a lot of short stroke issues with my 300 BLK AR build (carbine length gas system). After some investigation I determined my AR was under gassed. One option would have been to drill out the gas port to a larger diameter but I didn't wan...
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3/3 found this helpful
Helpful Positive Review
Problem Solved by Easystreet, Verified Owner, October 22, 2021
My 300 Black Pistol was short-stroking and not cycling properly. The gas port on my rosco suppressor optimized barrel is just that optimized for suppressor use. I know this because it runs great suppressed. Unsuppressed not so much. This reduced powe...
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5/5 found this helpful
Helpful Positive Review
fixed 300 blackout running subsonic problems by Joe Mikes, Verified Owner, February 25, 2024
Was having failure to feed next round and wouldn’t lock back on empty when running subsonic with suppressor. Yellow reduced spring fixed the problem. 10.5” Faxon 1:8 barrel pistol gas tube 3 ounce buffer
2/2 found this helpful
Helpful Positive Review
Spring tuneing by Dill, Verified Owner, March 14, 2026
An absolutely must need if your running a can and a rare breed trigger this spring completely fixed my light primer strike issue.
1/1 found this helpful
Helpful Positive Review
Nice Spring by MikeG, Verified Owner, April 5, 2026
Very nice spring. Needed a lower power spring for my SBR 300 blackout since I put in a KynShot Hydraulic Buffer to improve reliability with cycling. Had a few failure-to-feeds, and putting in this reduced Power spring fixed the issue IMMEDIATELY. Hav...
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3/3 found this helpful
Read All 40 Reviews
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made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Sprinco USA Sprinco Power Buffer Spring, AR15 Carbine

The Blitzkrieg Components Sprinco Power Buffer Spring, AR15 Carbine significantly reduces the BDC value while boosting the BDR of any AR-15 platform. These BK Components AR15 Lower Parts made by Blitzkrieg Components utilize a chrome silicon steel material that is incredibly durable and efficient while keeping the feeble springs light and compact. The Blitzkrieg Components Sprinco Power Rifle Buffer Spring resists buckling and damage and provides the proper B.A. that keeps your round trains on target. If you're seeking a reliable and lightweight spring option, you can't pass up the Blitzkrieg Components Sprinco Power AR15 Carbine Buffer Spring.image

Specifications for Sprinco USA Sprinco Power Buffer Spring, AR15 Carbine:

Manufacturer: Sprinco USA
Finish: Oxide Matte
Fabric/Material: Chrome Silicon
Gun Make: AR Platform
Gun Model: AR-15
Gun Type: Rifle
Condition: New
Gas System Type: Blowback

Features of Sprinco USA Sprinco Power Buffer Spring, AR15 Carbine

  • High Quality: Sourced from Sprinco USA, these buffer springs are made from certified Chrome Silicon wire stock to ISO 9001:2008 quality standards..
  • Long Service Life: Springs are precision wound, heat treated, stress relieved, and shot peened for extended life, with an expected service life in excess of 30,000 rounds.
  • Corrosion and Wear Resistance: Springs are moly plated for improved corrosion and wear resistance.
  • Heat Treated
  • Stress Relieved
  • Shot Peened
  • Moly Plated
  • Extremely Long Service Life

Package Contents:

  • Sprinco USA Sprinco Power Buffer Spring, AR15 Carbine

Sprinco USA Sprinco Power Buffer Spring, AR15 Carbine Orderable Models

List of Orderable Models

  • Sprinco USA Sprinco AR15 Carbine Standard Power Buffer Sprin, White, SPRINCO-25003 , MPN: SPRINCO-25003 , UPC: 657780250035 , Code: 6Q8-BUS-BCNN13-SPRINCO-25003
  • Sprinco USA Sprinco AR15 Carbine Extra Power Buffer Spring, Red, SPRINCO-25004 , MPN: SPRINCO-25004 , UPC: 657780250042 , Code: 6Q8-BUS-BCNN13-SPRINCO-25004
  • Sprinco USA Sprinco AR15 Carbine Reduced Power Buffer Spring, Yellow, SPRINCO-25113 , MPN: SPRINCO-25113 , UPC: 657780251131 , Code: 6Q8-BUS-BCNN13-SPRINCO-25113
  • Sprinco USA Sprinco AR15 Carbine Enhanced Power Buffer Spring, Blue, SPRINCO-25007 , MPN: SPRINCO-25007 , UPC: 657780250073 , Code: 6Q8-BUS-BCNN13-SPRINCO-25007

Sprinco USA Sprinco Power Buffer Spring, AR15 Carbine Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Blitzkrieg Components Sprinco AR15 Carbine Standard Power Buffer Sprin, White, SPRINCO-25003 , MPN: SPRINCO-25003-EDEMO , Code: 6Q8-BUS-BCNN13-SPRINCO-25003-EDEMO-IN-D
  • USED, Blitzkrieg Components Sprinco AR15 Carbine Reduced Power Buffer Spring, Yellow, SPRINCO-25113 , MPN: SPRINCO-25113-EDEMO , Code: 6Q8-BUS-BCNN13-SPRINCO-25113-EDEMO-IN-C
  • USED, Blitzkrieg Components Sprinco AR15 Carbine Extra Power Buffer Spring, Red, SPRINCO-25004 , MPN: SPRINCO-25004-EDEMO , Code: 6Q8-BUS-BCNN13-SPRINCO-25004-EDEMO-IN-C
  • DEMO, Blitzkrieg Components Sprinco Reduced Power Buffer-Spring, AR15 Carbine, SPRINCO25113 , MPN: SPRINCO-25113-DEMO , Code: 6Q8-BUS-BCNN13-SPRINCO25113-DEMO
  • DEMO, Sprinco USA Sprinco AR15 Carbine Reduced Power Buffer Spring, Yellow, SPRINCO-25113 , MPN: SPRINCO-25113-DEMO , Code: 6Q8-BUS-BCNN13-SPRINCO-25113-DEMO-OB-A
  • DEMO, Blitzkrieg Components Sprinco AR15 Carbine Extra Power Buffer Spring, Red, SPRINCO-25004 , MPN: SPRINCO-25004-DEMO , Code: 6Q8-BUS-BCNN13-SPRINCO-25004-DEMO-OB-A
  • USED Blitzkrieg Components SPRINCO AR15 Carbine Extra Power Buffer Spring, Red, SPRINCO25004, EDEMO2, Used, Condition Fair , MPN: SPRINCO25004-EDEMO2 , Code: 6Q8-BUS-BCNN13-SPRINCO25004-EDEMO2
  • USED Blitzkrieg Components SPRINCO AR15 Carbine Extra Power Buffer Spring, Red, SPRINCO25004, EDEMO1, Condition Parts Only/Salvage, Wrong Product , MPN: SPRINCO25004-EDEMO1 , Code: 6Q8-BUS-BCNN13-SPRINCO25004-EDEMO-WP-F
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Last updated 2026-09-20 UTC.