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Spro USA
Overview
The Sprinco USA 308 M4 Extension Tube CS XP Buffer Spring is specifically designed for AR-10 platforms, featuring a carbine length that optimizes cycling performance for your build. With its XP power rating, this buffer spring provides enhanced resistance to compression, ensuring reliable operation even under demanding conditions. This spring is commonly found in builds with a mid-length gas system and is often paired with the 5.56 NATO caliber, making it a versatile choice for those looking to enhance their firearm's reliability and functionality.
Based on build data

Strike Industries Cobra Billet Aluminum Trigger Guard - Red

Timber Creek Outdoors Ar-15 Takedown Pin Set - Red

Strike Industries Carbine Length Pistol Buffer Tube - Red

Rise Armament Ar-15 Magazine Release Button - Rise Red

Strike Industries End Plate and Anti-Rotate Castle Nut for Receivers, Red - SI-AR-UL-MFEP&ACN-RED

Strike Industries Ar-15 Ambidextrous Safety Selector Switch - Red
Aggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Strike Industries Cobra Billet Aluminum Trigger Guard - Red | 10 | |
| Timber Creek Outdoors Ar-15 Takedown Pin Set - Red | 10 | |
| Strike Industries Carbine Length Pistol Buffer Tube - Red | 9 | |
| Rise Armament Ar-15 Magazine Release Button - Rise Red | 8 | |
| Strike Industries End Plate and Anti-Rotate Castle Nut for Receivers, Red - SI-AR-UL-MFEP&ACN-RED | 8 | |
| Strike Industries Ar-15 Ambidextrous Safety Selector Switch - Red | 8 |
| Platform | Percentage |
|---|---|
| AR-15 | 75% |
| AR-10 | 12.5% |
| AR-9 | 12.5% |
| Caliber | Percentage |
|---|---|
| .223 Wylde | 57.1% |
| 5.56 NATO | 42.9% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 40% |
| Pistol | 20% |
| Intermediate | 20% |
| Rifle | 20% |
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