Expo Arms Mil-Spec Steel Castle Nut
Expo Arms
Overview
The Expo Arms Mil-Spec Steel Castle Nut is a end plate. Compare prices from multiple merchants and find the best deal.
Specifications
TypeStandard
FinishPhosphate
MaterialSteel
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Frequently Built With
Based on build data
Law Tactical AR Folding Stock Adapter Gen 3 - HK
Stock Adapter
Strike Industries Extended Bolt Catch
Bolt Catch
Strike Industries AR-10 Shift Pins, Black - SI-AR10-SHIFT-BK
Takedown Pin
Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black
Gas Block
Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length
Gas Tube
Wmd Guns Nitromet Ar-15 Bolt Catch
Bolt CatchBuild Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
83.8%
AR-1583.8%
AR-1014.5%
AR-91.7%
CaliberBased on real build data showing which calibers builders choose alongside this product.
69.1%
5.56 NATO69.1%
.223 Wylde14%
300 Blackout6.7%
.308 Win4.2%
.450 Bushmaster1.7%
Other4.3%
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
48.9%
Mid-Length48.9%
Carbine25.9%
Rifle15.9%
Pistol8.7%
Blowback0.3%
Other0.3%
| Product | Category | Times Built Together |
|---|---|---|
| Law Tactical AR Folding Stock Adapter Gen 3 - HK | Stock Adapter | 78 |
| Strike Industries Extended Bolt Catch | Bolt Catch | 78 |
| Strike Industries AR-10 Shift Pins, Black - SI-AR10-SHIFT-BK | Takedown Pin | 72 |
| Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black | Gas Block | 65 |
| Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length | Gas Tube | 59 |
| Wmd Guns Nitromet Ar-15 Bolt Catch | Bolt Catch | 57 |
| Platform | Percentage |
|---|---|
| AR-15 | 83.8% |
| AR-10 | 14.5% |
| AR-9 | 1.7% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 69.1% |
| .223 Wylde | 14% |
| 300 Blackout | 6.7% |
| .308 Win | 4.2% |
| .450 Bushmaster | 1.7% |
| 6mm ARC | 1.4% |
| .458 SOCOM | 0.8% |
| 6.5 Grendel | 0.6% |
| 9mm | 0.6% |
| .204 Ruger | 0.3% |
| 6.8 SPC II | 0.3% |
| 7.62x39mm | 0.3% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 48.9% |
| Carbine | 25.9% |
| Rifle | 15.9% |
| Pistol | 8.7% |
| Blowback | 0.3% |
| Intermediate | 0.3% |
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