B1 Extended Mag Release Black
$17.99 at MidwayUSA · 8 stores
In stock
Best price
$17.99at OpticsPlanet
Out of stock Sale checked Nov 10, 2026
In stock now instead
- B1 Extended Mag Release Black $17.99at MidwayUSA
- B2 Extended Mag Release Black $17.99at Sportsman's Guide
- Geissele Ultra Duty Magazine Release Button $17.99at Ammunition Depot
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $17.99Salechecked Nov 10, 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.
Similar lower parts in stock
This part is out of stock at every store we track. These similar lower parts are in stock, with today's prices.
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Price history
Dashed line = out of stock. Tracking since Oct 23, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $17.99 | $17.99 | $17.99 |
Since Oct 23, 2026.
About this part
The Armaspec TCB-31 Extended Magazine Release Bronze is an AR-10 lower part from Armaspec. One store lists it, OpticsPlanet at $17.99.
Specifications
- Manufacturer
- Armaspec
- Color
- Bronze
- Type
- Magazine Catch
- Platform
- AR-10
- Material
- Aluminum
From the manufacturer
Armaspec TCB-31 Extended Magazine Release Bronze. 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-BRZ: TCB-31 Extended Magazine Release Bronze
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