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Geissele
Overview
The Geissele Automatics Reliability Enhancement Kit H3 is designed specifically for the 5.56 NATO caliber and features an M16-style bolt carrier, which allows for enhanced reliability in operation. This kit optimizes the performance of your AR-15 by ensuring smoother cycling and improved reliability, especially in varied conditions. It's a popular choice for builds utilizing a mid-length gas system, ensuring consistent function and performance.
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Based on build data

Aero Precision Stripped M4e1 Ar-15 Lower Receiver - Special Edition - Freedom

Strike Industries TRIBUS Enhanced Castle Nut and Ext End Plate for AR-15 Rifle, FDE
End Plate
Troy Industries Freefloat M-Lok Rail Ar-15 Handguard - Black - 11"
Handguard
Geissele Super AR-15 Gas Block .750 Low Profile
Gas Tube
Geissele Automatics Ultra Duty Checkered Takedown Pin Set

Surefire Switch Module for MU Weapon Light - Includes ST07 Tape Switch
SwitchesAggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Aero Precision Stripped M4e1 Ar-15 Lower Receiver - Special Edition - Freedom | 2 | |
| Strike Industries TRIBUS Enhanced Castle Nut and Ext End Plate for AR-15 Rifle, FDE | End Plate | 2 |
| Troy Industries Freefloat M-Lok Rail Ar-15 Handguard - Black - 11" | Handguard | 2 |
| Geissele Super AR-15 Gas Block .750 Low Profile | Gas Tube | 2 |
| Geissele Automatics Ultra Duty Checkered Takedown Pin Set | 2 | |
| Surefire Switch Module for MU Weapon Light - Includes ST07 Tape Switch | Switches | 2 |
| Platform | Percentage |
|---|---|
| AR-15 | 83.3% |
| AR-10 | 16.7% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 66.7% |
| .223 Wylde | 25% |
| 300 Blackout | 8.3% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 75% |
| Carbine | 12.5% |
| Pistol | 12.5% |
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