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Spro USA
Overview
The Sprinco USA XP Buffer Spring Kit includes an XP buffer spring and a dual extractor spring set specifically designed for the AR-15 platform. The XP designation indicates a higher power spring, which enhances the cycling speed of the action, making it ideal for builds that require reliable operation under varied conditions. This kit is often found in mid-length gas system builds chambered in 5.56 NATO, where optimal performance and reliability are crucial.
Based on build data
Strike Industries Cobra Billet Aluminum Trigger Guard - Red
Phase 5 Version 2 Extended Bolt Release, 2.15" - EBRV2
Strike Industries End Plate and Anti-Rotate Castle Nut for Receivers, Red - SI-AR-UL-MFEP&ACN-RED
Timber Creek Outdoors Ar-15 Takedown Pin Set - Red
Strike Industries 7075 T6 Aluminum AR Pistol Buffer Tube, Red - ARSPRESLICKRED
Strike Industries Carbine Length Pistol Buffer Tube - Red
Aggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Strike Industries Cobra Billet Aluminum Trigger Guard - Red | 11 | |
| Phase 5 Version 2 Extended Bolt Release, 2.15" - EBRV2 | 10 | |
| Strike Industries End Plate and Anti-Rotate Castle Nut for Receivers, Red - SI-AR-UL-MFEP&ACN-RED | 9 | |
| Timber Creek Outdoors Ar-15 Takedown Pin Set - Red | 9 | |
| Strike Industries 7075 T6 Aluminum AR Pistol Buffer Tube, Red - ARSPRESLICKRED | 9 | |
| Strike Industries Carbine Length Pistol Buffer Tube - Red | 9 |
| Platform | Percentage |
|---|---|
| AR-15 | 81.8% |
| AR-10 | 13.6% |
| AR-9 | 4.5% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 81% |
| .223 Wylde | 9.5% |
| .308 Win | 4.8% |
| 9mm | 4.8% |
| Gas System | Percentage |
|---|---|
| Carbine | 45% |
| Mid-Length | 30% |
| Rifle | 15% |
| Blowback | 5% |
| Pistol | 5% |
Builds in the community that include the Sprinco Usa Spring Kit- Xp Buffer Spring W/ Dual Extractor Spring Set
| Build | Parts | Total |
|---|---|---|
 | 25 | $1846.81 |
 | 26 | $3345.80 |
 | 29 | $2574.40 |
 | 31 | $2666.61 |
 | 14 | $1663.63 |
 | 29 | $3809.42 |
 | 24 | $1518.28 |
 | 31 | $3310.54 |
 | 29 | $4812.94 |
2 global ratings
Sprincos XP buffer spring with the dual extractor spring kit makes a noticeable difference in cycle smoothness. The chrome silicon spring resists fatigue compared to music wire. Dual extractor springs help with bolt grip on the case rim. Worth swapping during your next BCG service.
sprinco XP spring is heavier than a standard carbine spring, paired with a dual extractor spring upgrade tames a hot 11.5. ejection is now a tight 4 oclock pile from a previously erratic 2-3. springs are linear and quiet, no twang
