Armed In Michigan© Armed In Michigan
1Deal ScoreIn Stock

ProMag Magazine LR-308, SR-25, Ruger Precision Rifle 308 Winchester 40-Round Polymer Black

$18.22
Brand
ProMag
Color
Black
Caliber
.308 Win
Capacity
40
Category
Gun Parts
Platform
AR-10
Gun Part Type
Magazine
UPC
708279013270
MPN
DPMA4

Overview

The ProMag 40-round magazine is designed for AR-style rifles chambered in .308 Winchester that utilize LR-308 (DPMS) or SR-25 pattern magazine wells. It is constructed from a proprietary DuPont Zytel-based black polymer, featuring an injection-molded follower and a magazine spring formed from heat-treated stainless steel wire. Note: This magazine is not compatible with rifles that use Armalite-pattern magazine wells.

Price & Stock History

Price — 90d
Listings In Stock — 30d

Reviews

3.2
11 reviews
Customer Sentiment

Customer experiences are polarized, with reports ranging from reliable performance to frequent jamming and feeding issues. Several users noted that the magazine often requires physical modification or sanding to achieve a proper fit in their firearms.

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Listings

About DealsGunsAmmo (DGA)

A price and stock aggregator built for a market the incumbents stopped improving.

We compare listings across dozens of retailers and normalize everything to true cost-per-round — not sticker price, not case-size guesswork.

Who we are

DealsGunsAmmo (DGA) is an independent data provider tracking price and stock across the ammo, firearm, and parts market — giving buyers and the industry an outside, macro-level view of where the market actually stands.

What we’re building

A data-driven platform meant to be the go-to spot for purchasing decisions — comparing offers across vendors and tracking price history, so you can read the market as a whole, not just one listing at a time.

Who we serveNOW

Today, we help buyers on their purchasing journey with price alerts and a real look at where prices have actually been.

LaterNEXT

Down the road, we plan to sell that same market data back to vendors — inventory demand, customer interest and sentiment, and competitive pricing.