ZEROED Ambidextrous Magazine Catch and Button Kit
$38.99 at Kentucky Gun Co · 8 stores
In stock
Best price
$39.99at GunMag Warehouse
In stock checked Oct 21, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| GunMag Warehouse Best price | $39.99checked Oct 21, 2026 | In stock | Buy at GunMag Warehouse | |
| MidwayUSA | $46.00checked Oct 21, 2026 | In stock | Buy at MidwayUSA | |
| Brownells | $49.23checked Oct 21, 2026 | In stock | Buy at Brownells | |
| Ammunition Depot | $49.99checked Oct 21, 2026 | In stock | Buy at Ammunition Depot | |
| OpticsPlanet | $51.39Salechecked Oct 21, 2026 | In stock | Buy at OpticsPlanet | |
| Battlehawk Armory | $40.49Salechecked Sep 30, 2026 | Check store | Buy at Battlehawk Armory | |
| Palmetto State Armory | $43.89checked Oct 21, 2026 | Check store | Buy at Palmetto State Armory | |
| CMMG | $49.95checked Oct 21, 2026 | Check store | Buy at CMMG |
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: $39.99 at GunMag Warehouse. Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Ammunition Depot | $49.99 | $49.99 | $51.49 |
| Battlehawk Armory | — | $40.49 | $40.49 |
| Brownells | $49.23 | $49.23 | $49.23 |
| CMMG | $49.95 | $49.95 | $49.95 |
| GunMag Warehouse | $39.99 | $39.99 | $39.99 |
| MidwayUSA | $46.00 | $46.00 | $46.99 |
| OpticsPlanet | $51.39 | $51.19 | $54.89 |
| Palmetto State Armory | $43.89 | $43.89 | $43.89 |
Since Sep 27, 2026.
About this part
The 308 AR Gunbuilder's Lower Parts Kit is an AR-10 lower part from CMMG. It's sold by 8 stores (5 in stock), from $39.99 to $51.39. The lowest in-stock price in the last 30 days was $39.99 at GunMag Warehouse.
Specifications
- Manufacturer
- CMMG
- Type
- Kit
- Platform
- AR-10
From the manufacturer
The 308 version includes LR308 takedown and pivot pins as well as an improved bolt catch. The 308 kits also include a bolt catch screw in place of the AR-15 pin. Parts list includes: Takedown pin, receiver pivot pin, takedown pin detent (2), takedown pin detent spring (2), hammer and trigger pin (2), safety selector, selector detent, magazine catch, magazine catch spring, magazine release button, bolt catch, bolt catch plunger, bolt catch spring, bolt catch spring pin, buffer retainer and buffer retainer spring. Mfg: Cmmg
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