Ergo .750 Low Profile Gas Block - 4821
$20.49 at OpticsPlanet · 4 stores
In stock Sale
Lead & Steel 4140 Nitride Quality AR-15 Gas Block 0.750in Black
No ratings yetBest price
$20.49at Ammunition Depot
In stock checked Oct 26, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Ammunition Depot Best price | $20.49checked Oct 26, 2026 | In stock | Buy at Ammunition Depot | |
| Battlehawk Armory | $18.07checked Oct 28, 2026 | Check store | Buy at Battlehawk Armory | |
| Palmetto State Armory | $21.99checked Oct 25, 2026 | Check store | Buy at Palmetto State Armory | |
| Kentucky Gun Co | $19.99checked Nov 3, 2026 | Out of stock | Buy at Kentucky Gun Co | |
| OpticsPlanet | $29.99Salechecked Nov 3, 2026 | Out of stock | Buy at OpticsPlanet |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Lowest in-stock price in the last 30 days: $19.99 at Kentucky Gun Co. Dashed line = out of stock. Tracking since Oct 12, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Ammunition Depot | — | $20.49 | $20.49 |
| Battlehawk Armory | — | $18.07 | $18.07 |
| Kentucky Gun Co | $19.99 | $19.99 | $19.99 |
| OpticsPlanet | $29.99 | $23.49 | $29.99 |
| Palmetto State Armory | — | $21.99 | $21.99 |
Since Oct 12, 2026.
About this part
The Lead & Steel 4140 Nitride Quality AR-15 Gas Block 0.750in Black is a gas system part from Lead & Steel. It's sold by 5 stores (1 in stock), from $18.07 to $29.99. The lowest in-stock price in the last 30 days was $19.99 at Kentucky Gun Co.
Specifications
- Manufacturer
- Lead & Steel
- Color
- Black
- Finish
- Nitride
- Material
- Steel
From the manufacturer
Lead & Steel 4140 Nitride Quality AR-15 Gas Block 0.750in Black. Each gas block is individually gauged before being nitrided. If you want peace of mind look no further than the QGB Specifications for Lead & Steel 4140 Nitride Quality AR-15 Gas Block: Manufacturer: Lead & Steel Color: Black Coating: Nitride Fabric/Material: CNC Machined Gun Make: AR Platform Gun Model: AR-15 Weight: 3 oz Package Contents: Lead & Steel 4140 Nitride Quality AR-15 Gas Block 2 gas block screws What firearm models does the manufacturer say Lead & Steel 4140 Nitride Quality AR-15 Gas Block is compatible with? The manufacturer suggests that Lead & Steel 4140 Nitride Quality AR-15 Gas Block is compatible with AR-15Lead & Steel 122123: 4140 Nitride Quality AR-15 Gas Block 0.750in Black
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