“`html
Upgrade Your AR-15’s Reliability with Sprinco’s 4-Coil Extractor Spring Kit
Extractor spring failures cause most AR-15 malfunctions—weak ejection, stovepipes, or double-feeds. Sprinco’s 4-coil upgrade kit reinforces your bolt’s extraction power with precision-tempered springs that outlast factory components. This 3-pack ensures you’ll always have spares for high-round-count range days or tactical use. Ships discreetly to all 50 states.
Key Specifications
- Material: Chrome silicon steel (heat-treated for fatigue resistance)
- Design: 4-coil configuration (vs. standard 2-coil) for increased tension
- Compatibility: Fits mil-spec AR-15/M16 bolts (5.56/.223)
- Contents: 3 extractor springs + 3 D-follower inserts
- Finish: Black oxide corrosion protection
Why This Upgrade Matters
The extractor claw is only as strong as the spring behind it. Factory springs weaken after ~1,000 rounds, losing the clamping force needed to grip spent casings. Sprinco’s 4-coil design maintains consistent pressure even with hot loads or fouled chambers—critical for defensive use or competition where failures aren’t an option.
Chrome silicon steel handles repeated compression cycles without taking a set, unlike cheaper music wire springs. The D-follower insert prevents spring binding during bolt rotation, a common point of wear. This kit doesn’t just fix extraction issues—it prevents them before they happen.
Three springs mean you can rotate them during cleaning (extending service life) or outfit multiple bolts. The black oxide finish reduces friction against the bolt carrier while resisting carbon buildup. No modifications needed—drop-in installation takes under a minute.
Range tests show these springs maintain tension through 5,000+ rounds with proper maintenance. While no spring lasts forever, this kit gives you the margin of reliability needed for hard-use rifles.
Compatibility Notes
- Works with all mil-spec AR-15 bolts (5.56/.223)
- Not for use with .300 BLK bolts (different extractor geometry)
- Compatible with aftermarket bolts if they use standard extractor dimensions
- Fits Colt, BCM, Daniel Defense, PSA, Aero Precision, and other mil-spec carriers
Installation Overview
- Remove bolt from carrier and push out extractor pin
- Swap factory spring with Sprinco unit, ensuring D-follower seats correctly
- Reinsert extractor pin—no tools required beyond a punch
- Function test by manually cycling dummy rounds
Note: Some aftermarket bolts may require slight pin hole deburring for smooth insertion.
Frequently Asked Questions
Q: Will this increase felt recoil?
A: No—extractor springs don’t affect recoil impulse. Only the buffer system and gas settings change perceived kick.
Q: Do I need to replace the extractor claw too?
A: Only if yours shows visible wear (chipped edges, rounded claw). Most factory extractors pair fine with this spring.
Q: How often should I rotate springs?
A: Every 1,500-2,000 rounds for optimal performance, or whenever you deep-clean the bolt.
Q: Works with steel case ammo?
A: Yes—the added tension helps grip steel cases’ harder rims, but monitor extractor wear with abrasive ammo.
Q: Can I use this in a full-auto BCG?
A> Yes, but inspect springs every 500 rounds due to accelerated wear in FA systems.
Warranty & Shipping
Sprinco backs this kit against manufacturing defects for 1 year. We ship same/next business day via USPS Priority or UPS Ground (select at checkout). All orders ship in plain packaging—no external branding. No FFL required for springs.
“`nn
Reviews
There are no reviews yet.