Magtech First Defense 300 Blackout Ammo - 500 Rounds of 123 Grain FMJ Ammunition
Ammo.com · .300 Blackout
$369.99
(74.0¢/rd)
· 500 rounds
In stock
- Current
- $369.99
- Lowest seen
- $369.99
- Highest seen
- $369.99
Tracked since Aug 19, 2026 · price unchanged so far.
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Compare prices · the same 500-round box at other retailers we track (this one: $369.99)
Confident matches
500 Round Flat Can - 300 Blackout 123 Grain FMJ Magtech Ammo - 300BLKB - Packed in Metal Canister
SGAmmo
74.0¢/rd
$369.95
$0.04 less
Same load and box size, matched by product title. "Possible" matches may be a close variant, so confirm the exact item on the retailer's page before buying.