---
title: "Magpul PMAG Gen M3 40rd Magazine for AR-15, 5.56, Plum, 3-Pack"
description: "$51.95 at Keystone Shooting Supply, 3% below usual."
type: "product"
category: "magazines"
brand: "Magpul"
landed_price: 51.95
currency: "USD"
best_store: "Keystone Shooting Supply"
deal_signal: "lower"
usual_price: 53.74
updated: "2026-10-19T12:43:00.000Z"
url: "https://trigger.deals/p/magpul-pmag-gen-m3-40rd-magazine-for-ar-15-556-plum-3-pack-vhy"
site: "Trigger Deals"
data: "sample"
---

# Magpul PMAG Gen M3 40rd Magazine for AR-15, 5.56, Plum, 3-Pack

> Lowest landed price: **$51.95** at Keystone Shooting Supply (★ 4.8, 24,471 reviews), **$17.32/mag**. 3% below usual (usual $53.74, the 90-day median). Only 9 left, verified 2026-10-19 12:43 UTC.

- Item price $51.95 + free shipping. Landed price excludes sales tax.
- 90-day range: $42.34 to $60.15
- 2-year low: $42.34 (Sep 14, 2026)
- Price unchanged for 4 days (since 2026-10-16 20:06 UTC)
- MSRP: $54.99 (6% off)
- Brand: Magpul. Category: magazines.
- [Buy at Keystone Shooting Supply](https://trigger.deals/go/magpul-pmag-gen-m3-40rd-magazine-for-ar-15-556-plum-3-pack-vhy?store=keystone-shooting)

## Compare stores (3)

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

| Store | Rating | Landed price | Versus best | Item price | Shipping | Stock | Verified |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Keystone Shooting Supply (best) | ★ 4.8 | $51.95 | Best price | $51.95 | Free | Only 9 left | 2026-10-19 12:43 UTC |
| Coyote Trail Supply | ★ 4.5 | $57.99 | +$6.04 | $57.99 | Free | In stock | 2026-10-19 10:53 UTC |
| Gulf Coast Guns | ★ 4.6 | $48.98 | – | $41.99 | $6.99 | Out of stock | 2026-10-19 12:09 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/magpul-pmag-gen-m3-40rd-magazine-for-ar-15-556-plum-3-pack-vhy?days=730)).

| Date | Lowest landed price |
| --- | --- |
| Jul 27, 2026 | $52.84 |
| Aug 3, 2026 | $50.92 |
| Aug 10, 2026 | $60.15 |
| Aug 17, 2026 | $60.15 |
| Aug 24, 2026 | $54.63 |
| Aug 31, 2026 | $55.97 |
| Sep 7, 2026 | $55.97 |
| Sep 14, 2026 | $42.34 |
| Sep 21, 2026 | $59.34 |
| Sep 28, 2026 | $50.87 |
| Oct 5, 2026 | $50.87 |
| Oct 12, 2026 | $59.43 |
| Oct 19, 2026 | $51.95 |

## About this product

A 40-round magazine for the AR-15 in 5.56 NATO, with a polymer body in plum. 3 magazines per order. Some states limit magazine capacity; check your local law before ordering.

## Specs

| Spec | Value |
| --- | --- |
| Fits | AR-15 |
| Caliber | 5.56 NATO |
| Capacity | 40 rounds |
| Material | Polymer |
| Color | Plum |
| Pack size | 3 magazines |

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