---
title: "Underwood Xtreme Defender 10mm Auto 180gr Solid copper Micro, 20 Rounds"
description: "$40.90 at Bulk Brass Depot, 20% below usual."
type: "product"
category: "ammo"
brand: "Underwood"
landed_price: 40.9
currency: "USD"
price_per_round_cents: 204.5
best_store: "Bulk Brass Depot"
deal_signal: "lower"
usual_price: 51.11
updated: "2026-10-19T12:25:00.000Z"
url: "https://trigger.deals/p/underwood-xtreme-defender-10mm-auto-180gr-solid-copper-micro-20-rounds-6re"
site: "Trigger Deals"
data: "sample"
---

# Underwood Xtreme Defender 10mm Auto 180gr Solid copper Micro, 20 Rounds

> Lowest landed price: **$40.90** at Bulk Brass Depot (★ 4.4, 22,103 reviews), **$2.05/rd**. 20% below usual (usual $51.11, the 90-day median), the lowest price in 90 days. In stock, verified 2026-10-19 12:25 UTC.

- Item price $27.95 + $12.95 shipping. Landed price excludes sales tax.
- 90-day range: $40.90 to $56.45
- 2-year low: $39.86 (Jul 1, 2026)
- Price unchanged for 2 days (since 2026-10-18 05:43 UTC)
- MSRP: $50.99 (20% off)
- Brand: Underwood. Category: ammo.
- [Buy at Bulk Brass Depot](https://trigger.deals/go/underwood-xtreme-defender-10mm-auto-180gr-solid-copper-micro-20-rounds-6re?store=bulk-brass-depot)

## Compare stores (6)

Ranked by landed price: the item plus shipping to you, before tax.

| Store | Rating | Landed price | Per round | Versus best | Item price | Shipping | Stock | Verified |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Bulk Brass Depot (best) | ★ 4.4 | $40.90 | $2.05 | Best price | $27.95 | $12.95 | In stock | 2026-10-19 12:25 UTC |
| Big Sky Ammo | ★ 4.3 | $42.44 | $2.12 | +7.70¢/rd | $23.49 | $18.95 | In stock | 2026-10-19 11:08 UTC |
| Riverbend Ammo Co. | ★ 4.7 | $44.94 | $2.25 | +20.2¢/rd | $32.99 | $11.95 | In stock | 2026-10-19 12:11 UTC |
| Timber Ridge Sporting | ★ 4.6 | $44.98 | $2.25 | +20.4¢/rd | $24.99 | $19.99 | In stock | 2026-10-19 12:01 UTC |
| Blue Ridge Munitions | ★ 4.5 | $45.94 | $2.30 | +25.2¢/rd | $28.99 | $16.95 | In stock | 2026-10-19 10:26 UTC |
| Copper Creek Ammo | ★ 4.7 | $48.49 | $2.42 | – | $48.49 | Free | Out of stock | 2026-10-19 11:47 UTC |

## Price history

Lowest landed price across stores, weekly over the last 90 days (full daily history: [JSON API](https://trigger.deals/api/v1/products/underwood-xtreme-defender-10mm-auto-180gr-solid-copper-micro-20-rounds-6re?days=730)).

| Date | Lowest landed price |
| --- | --- |
| Jul 27, 2026 | $56.45 |
| Aug 3, 2026 | $56.45 |
| Aug 10, 2026 | $45.66 |
| Aug 17, 2026 | $48.08 |
| Aug 24, 2026 | $47.89 |
| Aug 31, 2026 | $51.11 |
| Sep 7, 2026 | $51.11 |
| Sep 14, 2026 | $51.11 |
| Sep 21, 2026 | $51.11 |
| Sep 28, 2026 | $53.12 |
| Oct 5, 2026 | $53.12 |
| Oct 12, 2026 | $41.49 |
| Oct 19, 2026 | $40.90 |

## About this product

20 rounds of Underwood Xtreme Defender 10mm Auto 180gr Solid copper Micro: 10mm Auto with 180 grains Solid copper bullets and nickel-plated brass cases. Made for self-defense. Some states require an age check or ship ammo only to a dealer; the store confirms at checkout.

## Specs

| Spec | Value |
| --- | --- |
| Caliber | 10mm Auto |
| Bullet weight | 180 grains |
| Bullet type | Solid copper |
| Case | Nickel-plated brass |
| Rounds | 20 |
| Use | Self-defense |
| Variant | Micro |

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