B1 Extended Mag Release Black
$17.99 at MidwayUSA · 8 stores
In stock
Best price
$16.19at MidwayUSA
In stock Lowest in 30 dayschecked Nov 10, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| MidwayUSA Best price | $16.19checked Nov 10, 2026 | In stock | Buy at MidwayUSA | |
| OpticsPlanet | $17.99Salechecked Nov 10, 2026 | In stock | Buy at OpticsPlanet | |
| AR15Discounts | $16.19checked Nov 10, 2026 | Check store | Buy at AR15Discounts | |
| Dirty Bird | $17.10checked Nov 10, 2026 | Check store | Buy at Dirty Bird |
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: $16.19 at MidwayUSA. Dashed line = out of stock. Tracking since Oct 12, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $16.19 | $16.19 | $16.19 |
| Dirty Bird | $17.10 | $17.10 | $17.10 |
| MidwayUSA | $16.19 | $16.19 | $16.19 |
| OpticsPlanet | $17.99 | $17.99 | $17.99 |
Since Oct 12, 2026.
About this part
The Armaspec TCB-31 Extended Magazine Release Flat Dark Earth is an AR-10 lower part from Armaspec. It's sold by 4 stores (2 in stock), from $16.19 to $17.99. The lowest in-stock price in the last 30 days was $16.19 at MidwayUSA.
Specifications
- Manufacturer
- Armaspec
- Color
- Flat Dark Earth
- Type
- Magazine Catch
- Platform
- AR-10
- Material
- Aluminum
From the manufacturer
Armaspec TCB-31 Extended Magazine Release Flat Dark Earth. The TCB increases the size of your factory button by 263percent making it easier and faster to perform magazine changes. The size and ergonomic design enables button engagement without changing your grip position. Specifications for Armaspec TCB-31 Extended Magazine Release: Manufacturer: Armaspec Gun Make: AR Platform Gun Model: AR-10 AR-15 Fabric/Material: Aluminum Weight: 0.18 oz Condition: New Country of Origin: USA Features of Armaspec TCB-31 Extended Magazine Release Faster magazine change 263percent larger than Mil-Spec mag release button Compatible with Mil-Spec AR-15 lower receivers Ergonomic design made in specialized factories Lifetime warranty Package Contents: Armaspec TCB-31 Extended Magazine Release What firearm models does the manufacturer say Armaspec TCB-31 Extended Magazine Release is compatible with? The manufacturer suggests that Armaspec TCB-31 Extended Magazine Release is compatible with AR-15 AR-10Armaspec ARM103-FDE: TCB-31 Extended Magazine Release Flat Dark Earth
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