Availability: In Stock
The Magpul PMAG 20 LR/SR Gen M3 .308 is a purpose-built magazine for modern AR-10 and SR-25 pattern rifles that demand reliability without compromise. Whether you're running a precision rifle at the range, hunting with an intermediate AR platform, or building a dependable semi-auto .308, this 20-round magazine delivers the feeding consistency and durability that serious shooters expect from Magpul's combat-proven design. Built in the USA, the Gen M3 represents the latest iteration of Magpul's magazine engineering—refined geometry, improved ergonomics, and materials science that work in real conditions.
The PMAG 20 LR/SR is optimized for .308 Winchester and 7.62x51 NATO match ammunition with an overall length up to 2.830 inches, making it ideal for shooters running precision or longer-range loads. The constant-curve body and self-lubricating, anti-tilt follower ensure rounds feed smoothly under all conditions. A high-quality stainless steel spring resists corrosion and maintains tension through heavy use, while the next-generation impact-resistant polymer construction handles drops and rough handling without cracking or warping. The flared floorplate simplifies magazine handling, aids extraction, and improves drop protection—small details that matter when you need to reload quickly or field-strip in the mud.
Disassembly is tool-free: pop the floorplate, clean the internals, and reassemble. No proprietary tools, no guessing. The ribbed gripping surface and aggressive texture on the front and rear give you positive control when inserting or removing the magazine under gloved conditions or in low light. This is a high-round-count magazine that doesn't sacrifice handling for capacity.
| Caliber | 7.62x51mm / .308 Winchester |
| Capacity | 20 rounds |
| Platform | AR-10, M110, SR-25 pattern rifles |
| Optimized for ammunition | .308 Winchester match ammo, max OAL 2.830" |
| Material | Impact-resistant polymer body, stainless steel spring |
| Color | Olive Drab Green (ODG) |
| Country of Origin | USA |
The magazine is designed for AR-10, SR-25, and M110 pattern rifles. Confirmed compatible platforms include the Armalite AR-10A, Colt LE901-16S, CORE Rifle Systems CORE30, JP Enterprises LRP-07, KAC SR25, LaRue OBR, Les Baer .308, LMT .308 MWS, LWRCI REPR, Mega Arms MATEN, Noveske Gen III N6, POF P-308, Ruger SR-762, Ruger Precision Rifle, S&W M&P10, and SIG716. It is backward compatible with older Bushmaster .308 ORC, Remington R-25, and DPMS LR-308 rifles, but not optimized for bolt lock functionality with newer DPMS Gen II-based rifles. It is NOT compatible with Armalite AR-10B, Springfield M1A, Rock River LAR8, FN SCAR 17S, PTR-91, HK417, or any rifle using M14, FAL, or HK 91/G3 pattern magazines.
The PMAG 20 LR/SR Gen M3 is optimized for .308 Winchester and 7.62x51 NATO match ammunition with a maximum overall length (OAL) of 2.830 inches. This makes it well-suited for precision and long-range loads.
No, the dust cover is not included with this magazine.
The magazine is optimized for ammunition with an OAL up to 2.830 inches. Longer than SAAMI-specification match ammunition may not drop free from all lower receiver designs, so verify compatibility with your specific rifle before relying on the magazine in the field.
SKU: 200189112
Availability: In Stock
The Magpul PMAG 20 LR/SR Gen M3 .308 is a purpose-built magazine for modern AR-10 and SR-25 pattern rifles that demand reliability without compromise. Whether you're running a precision rifle at the range, hunting with an intermediate AR platform, or building a dependable semi-auto .308, this 20-round magazine delivers the feeding consistency and durability that serious shooters expect from Magpul's combat-proven design. Built in the USA, the Gen M3 represents the latest iteration of Magpul's magazine engineering—refined geometry, improved ergonomics, and materials science that work in real conditions.
The PMAG 20 LR/SR is optimized for .308 Winchester and 7.62x51 NATO match ammunition with an overall length up to 2.830 inches, making it ideal for shooters running precision or longer-range loads. The constant-curve body and self-lubricating, anti-tilt follower ensure rounds feed smoothly under all conditions. A high-quality stainless steel spring resists corrosion and maintains tension through heavy use, while the next-generation impact-resistant polymer construction handles drops and rough handling without cracking or warping. The flared floorplate simplifies magazine handling, aids extraction, and improves drop protection—small details that matter when you need to reload quickly or field-strip in the mud.
Disassembly is tool-free: pop the floorplate, clean the internals, and reassemble. No proprietary tools, no guessing. The ribbed gripping surface and aggressive texture on the front and rear give you positive control when inserting or removing the magazine under gloved conditions or in low light. This is a high-round-count magazine that doesn't sacrifice handling for capacity.
| Caliber | 7.62x51mm / .308 Winchester |
| Capacity | 20 rounds |
| Platform | AR-10, M110, SR-25 pattern rifles |
| Optimized for ammunition | .308 Winchester match ammo, max OAL 2.830" |
| Material | Impact-resistant polymer body, stainless steel spring |
| Color | Olive Drab Green (ODG) |
| Country of Origin | USA |
The magazine is designed for AR-10, SR-25, and M110 pattern rifles. Confirmed compatible platforms include the Armalite AR-10A, Colt LE901-16S, CORE Rifle Systems CORE30, JP Enterprises LRP-07, KAC SR25, LaRue OBR, Les Baer .308, LMT .308 MWS, LWRCI REPR, Mega Arms MATEN, Noveske Gen III N6, POF P-308, Ruger SR-762, Ruger Precision Rifle, S&W M&P10, and SIG716. It is backward compatible with older Bushmaster .308 ORC, Remington R-25, and DPMS LR-308 rifles, but not optimized for bolt lock functionality with newer DPMS Gen II-based rifles. It is NOT compatible with Armalite AR-10B, Springfield M1A, Rock River LAR8, FN SCAR 17S, PTR-91, HK417, or any rifle using M14, FAL, or HK 91/G3 pattern magazines.
The PMAG 20 LR/SR Gen M3 is optimized for .308 Winchester and 7.62x51 NATO match ammunition with a maximum overall length (OAL) of 2.830 inches. This makes it well-suited for precision and long-range loads.
No, the dust cover is not included with this magazine.
The magazine is optimized for ammunition with an OAL up to 2.830 inches. Longer than SAAMI-specification match ammunition may not drop free from all lower receiver designs, so verify compatibility with your specific rifle before relying on the magazine in the field.
SKU: 200189112