Magazine

Magazines feed ammunition into your rifle and are critical for reliable function. While seemingly simple, magazine quality significantly affects feeding reliability. Choosing good magazines and understanding capacity options for your jurisdiction is important.

Magazine Types

STANAG/USGI Pattern: The standard metal magazine design. Modern iterations use improved followers and anti-tilt geometry. Affordable and proven. Popular brands include Okay Industries (USGI contractor), D&H, and Duramag.

Polymer: Lighter than metal with good durability. Magpul PMAGs are the industry standard. Gen M3 PMAGs are arguably the most reliable AR magazines available. Some polymer designs include windows to check round count.

Hybrid: Metal body with polymer follower and floorplate. Combines benefits of both. Lancer AWM magazines are popular examples.

Drum Magazines: High capacity (50-100 rounds) but heavy, bulky, and often less reliable than standard magazines. Specialized use cases only.

Capacity Considerations

Standard AR-15 magazine capacities:

5/10 rounds: Required in some states with capacity restrictions
20 rounds: Shorter for prone shooting, fits some cases better
30 rounds: Standard capacity for most uses
40+ rounds: Extended for competition or specialized needs

Check your state and local laws for capacity restrictions before purchasing.

Key Features

Anti-tilt followers: Prevent nose-diving on the last few rounds. Essential for reliability.

Stainless steel spring: Maintains tension better than music wire over time.

Dot matrix: Allows marking magazines with paint marker for organization.

Window: See remaining round count without removing magazine.

Over-insertion stop: Prevents slamming magazine too far into mag well.

Reliability Factors

Feed lip geometry must be correct
Spring tension must be adequate
Follower must not tilt
Body must not be dented or warped

Quality magazines from Magpul, Okay/USGI, Lancer, and Duramag rarely have issues. Cheap magazines are responsible for a large percentage of AR-15 malfunctions.

Maintenance

Magazines benefit from periodic cleaning and spring inspection. Replace springs if feeding becomes sluggish. Most quality magazines can be loaded to full capacity and stored indefinitely—spring wear comes from cycling, not storage.

Selection Guidelines

For defensive/duty use: Magpul Gen M3 PMAGs or quality USGI aluminum. Both are proven and affordable enough to stock in quantity. Buy once, buy quality, buy many—magazines are consumables that get dropped, lost, and worn.

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SAR9C-15

Sar Usa

$35.49

SAR USA 109T 9mm Magazine 10 Round Black

Sar Usa

$35.49

SAR USA B6-17 9mm Magazine 17 Round Blued for SAR B6 Pistol P8L P8S

Sar Usa

$35.49

SAR USA B6 9mm Magazine 10 Round Blued

Sar Usa

$35.49

SAR USA B6 9mm Magazine 21 Round Blued

Sar Usa

$35.99

SAR USA B6C-10 9mm Magazine for AR-9 Platform 10 Round Blued

Sar Usa

$35.49

SAR USA B6C10 B6C Compact 9mm Magazine, 10 Rounds, Steel, Fits B6 Comp…

Sar Usa 4.8 oz

$31.99

SAR USA B6C-13 Magazine 9mm Luger Steel 13-Round Black Finish

Sar Usa

$29.99

Sar USA B6C Compact 9mm Magazine 13-Round Detachable Steel B6C13

Sar Usa 3.2 oz

$31.99

Sar USA B6 Magazine 9mm Luger 17-Round Steel Black B617

Sar Usa 3.2 oz

$46.98

Sar USA B6 OEM Replacement Pistol Magazine 9mm Luger 10 Round Steel Bl…

Sar Usa 4.32 oz

$31.43

SAR USA CM9 9mm Magazine 10 Round OEM Steel Black Finish

Sar Usa

$31.99

SAR USA CM9 9mm Magazine 17rd

Sar Usa

$29.99

SAR USA CM9 CM917 17-Round 9mm Luger Pistol Magazine

Sar Usa 28.2 oz

$35.49

Sar USA CM9 Extended 21-Round 9mm Luger Pistol Magazine SAR921

Sar Usa

$39.99

SAR USA CM9 Magazine SAR921 21rd 9mm Luger Black Steel for CM9

Sar Usa 4 oz

$33.22

SAR USA K12 Sport 9mm Magazine 17 Round

Sar Usa

$40.12

SAR USA K-12 Sport 9mm Magazine For K-12 Sport 10 Round Steel

Sar Usa

$36.89

SAR USA K-12 Sport Magazine K12-10 9mm Luger 10-Round Steel, Compatibl…

Sar Usa

$32.41

Sar USA K-12 Sport Pistol Magazine 9mm Luger 17-Round Black Steel K121…

Sar Usa

$33.22

SAR USA K12 Sport X 9mm Magazine - 10 Round

Sar Usa

$33.22

SAR USA K12 Sport X 9mm Magazine - 17 Round

Sar Usa

$33.22

SAR USA K245C 45 ACP Magazine 10rd

Sar Usa

$35.99

SAR USA K245C 45 ACP Magazine 13rd

Sar Usa

$35.99

SAR USA K2-45 / K2-45C 45ACP Magazine 14rd

Sar Usa

$35.99

SAR USA K2 45 Magazine K245-10 for K2/K2 Compact .45 ACP 10 Rounds Ste…

Sar Usa

$35.99

SAR USA K2/K2 Compact Detachable .45 ACP 14-Round Steel Magazine K2451…

Sar Usa 3.2 oz

$48.95

SAR USA K2 K2 Compact Magazine .45 ACP 10-Round Black Steel K24510

Sar Usa 3.84 oz

$48.55

SAR USA SAR9-10 9mm Luger Magazine for SAR9 10 Round

Sar Usa

$29.40

SAR USA SAR9 17-Round 9mm Detachable Pistol Magazine Black Steel SAR91…

Sar Usa 4.72 oz

$28.83

SAR USA SAR 9 9mm Magazine 15rd

Sar Usa

$28.83

SAR USA SAR9 9mm Magazine Detachable 17-Round Black

Sar Usa

$35.99

SAR USA SAR9 9mm Magazine Full Size 10 Round

Sar Usa

$32.39

SAR USA SAR9C15 SAR9 Compact 15-Round 9mm Magazine

Sar Usa

$32.00

SAR USA SAR9 Compact 9mm Magazine 10 Round Capacity

Sar Usa 5.68 oz

$28.83

SAR USA SAR9 Magazine 17-Round 9mm For SAR9 Pistol

Sar Usa

$32.00

Sar USA SAR9 Magazine 19-Round 9mm Luger Steel Black SAR919

Sar Usa 4.16 oz

$33.22

SAR USA SAR9 Magazine 9mm 10-Round SAR9SC-10

Sar Usa 2.64 oz

$29.40

Sar USA SAR9 Magazine 9mm Luger 10-Round Black Steel

Sar Usa 3 oz

$43.98

SAR USA SAR9SC-12 9mm Magazine 12-Round Subcompact

Sar Usa 2.48 oz

$29.40

SAR USA SAR9SC15 9mm Magazine Sub-Compact 15-Round for SAR9 Platform

Sar Usa

$33.22

Sar Usa SAR9 SC Magazine 9mm 17rd

Sar Usa 4.48 oz

$33.22

SAR USA SAR9 SOCOM SOCOMOD-17 9mm Magazine

Sar Usa 4 oz

$32.56

SAR USA SAR9 Sub-Compact 9mm Pistol Magazine SAR9SC15

Sar Usa

$48.55

SAR USA Socom 9mm 10rd Magazine Black

Sar Usa 4.24 oz

$33.22

SAR USA Socom 9mm 17rd Magazine Black

Sar Usa

$33.22

SAR USA Socom 9mm Compact Magazine OD Green 15rd

Sar Usa

$32.56

SAR USA SOCOMCBL-10 Magazine for SOCOM 9mm 10-Round Black

Sar Usa 3.52 oz

$34.83

SAR USA SOCOMCOD-10 SAR9 Magazine 9mm 10-round CMP OD Green

Sar Usa 3.44 oz

$34.83

SAR USA SOCOM Compact 9mm Magazine 15-Round Black AR-15

Sar Usa

$32.56

SAR USA SOCOMOD-10 SAR9 9mm Magazine 10-Round OD Green

Sar Usa 3.52 oz

$33.22

SAR USA ST45 45 ACP 10-Round Magazine ST4510

Sar Usa 5.12 oz

$24.09

SAR USA ST45 45 ACP Magazine 10 Round

Sar Usa

$27.25

SAR USA ST45 Pistol Magazine .45 ACP 12-Round Black Steel ST4512

Sar Usa 3.52 oz

$33.95

SAR USA ST9 9mm Magazine 10 Round Polymer ST9 Fit

Sar Usa

$33.99

SAR USA ST9 9mm Magazine 17rd

Sar Usa

$30.59

Sar USA ST9 Factory Magazine 9mm Luger 10-Round Black Steel with Polym…

Sar Usa

$41.08

Component	Manufacturer	Lowest Price	Rating
SAR9C-15 Retail: $42.99	Sar Usa	$35.49	—
SAR USA 109T 9mm Magazine 10 Round Black Retail: $35.49	Sar Usa	$35.49	—
SAR USA B6-17 9mm Magazine 17 Round Blued for SAR B6 Pistol P8L P8S Retail: $39.99	Sar Usa	$35.49	—
SAR USA B6 9mm Magazine 10 Round Blued Retail: $39.99	Sar Usa	$35.49	—
SAR USA B6 9mm Magazine 21 Round Blued Retail: $35.99	Sar Usa	$35.99	—
SAR USA B6C-10 9mm Magazine for AR-9 Platform 10 Round Blued Retail: $39.99	Sar Usa	$35.49	—
SAR USA B6C10 B6C Compact 9mm Magazine, 10 Rounds, Steel, Fits B6 Compact Retail: $31.99 4.8 oz	Sar Usa	$31.99	—
SAR USA B6C-13 Magazine 9mm Luger Steel 13-Round Black Finish Retail: $29.99	Sar Usa	$29.99	—
Sar USA B6C Compact 9mm Magazine 13-Round Detachable Steel B6C13 Retail: $31.99 3.2 oz	Sar Usa	$31.99	—
Sar USA B6 Magazine 9mm Luger 17-Round Steel Black B617 Retail: $46.98 3.2 oz	Sar Usa	$46.98	—
Sar USA B6 OEM Replacement Pistol Magazine 9mm Luger 10 Round Steel Black B… Retail: $34.93 4.32 oz	Sar Usa	$31.43	—
SAR USA CM9 9mm Magazine 10 Round OEM Steel Black Finish Retail: $31.99	Sar Usa	$31.99	—
SAR USA CM9 9mm Magazine 17rd Retail: $29.99	Sar Usa	$29.99	—
SAR USA CM9 CM917 17-Round 9mm Luger Pistol Magazine Retail: $35.49 28.2 oz	Sar Usa	$35.49	—
Sar USA CM9 Extended 21-Round 9mm Luger Pistol Magazine SAR921 Retail: $48.98	Sar Usa	$39.99	—
SAR USA CM9 Magazine SAR921 21rd 9mm Luger Black Steel for CM9 Retail: $36.92 4 oz	Sar Usa	$33.22	—
SAR USA K12 Sport 9mm Magazine 17 Round Retail: $48.99	Sar Usa	$40.12	—
SAR USA K-12 Sport 9mm Magazine For K-12 Sport 10 Round Steel Retail: $39.99	Sar Usa	$36.89	—
SAR USA K-12 Sport Magazine K12-10 9mm Luger 10-Round Steel, Compatible wit… Retail: $48.99	Sar Usa	$32.41	—
Sar USA K-12 Sport Pistol Magazine 9mm Luger 17-Round Black Steel K1217 Retail: $36.92	Sar Usa	$33.22	—
SAR USA K12 Sport X 9mm Magazine - 10 Round Retail: $33.22	Sar Usa	$33.22	—
SAR USA K12 Sport X 9mm Magazine - 17 Round Retail: $42.24	Sar Usa	$33.22	—
SAR USA K245C 45 ACP Magazine 10rd Retail: $35.99	Sar Usa	$35.99	—
SAR USA K245C 45 ACP Magazine 13rd Retail: $35.99	Sar Usa	$35.99	—
SAR USA K2-45 / K2-45C 45ACP Magazine 14rd Retail: $35.99	Sar Usa	$35.99	—
SAR USA K2 45 Magazine K245-10 for K2/K2 Compact .45 ACP 10 Rounds Steel Retail: $35.99	Sar Usa	$35.99	—
SAR USA K2/K2 Compact Detachable .45 ACP 14-Round Steel Magazine K24514 Retail: $51.95 3.2 oz	Sar Usa	$48.95	—
SAR USA K2 K2 Compact Magazine .45 ACP 10-Round Black Steel K24510 Retail: $48.55 3.84 oz	Sar Usa	$48.55	—
SAR USA SAR9-10 9mm Luger Magazine for SAR9 10 Round Retail: $32.66	Sar Usa	$29.40	—
SAR USA SAR9 17-Round 9mm Detachable Pistol Magazine Black Steel SAR917 Retail: $37.36 4.72 oz 8.30"	Sar Usa	$28.83	—
SAR USA SAR 9 9mm Magazine 15rd Retail: $32.00	Sar Usa	$28.83	—
SAR USA SAR9 9mm Magazine Detachable 17-Round Black Retail: $35.99	Sar Usa	$35.99	—
SAR USA SAR9 9mm Magazine Full Size 10 Round Retail: $42.99	Sar Usa	$32.39	—
SAR USA SAR9C15 SAR9 Compact 15-Round 9mm Magazine Retail: $32.00	Sar Usa	$32.00	—
SAR USA SAR9 Compact 9mm Magazine 10 Round Capacity Retail: $42.24 5.68 oz	Sar Usa	$28.83	—
SAR USA SAR9 Magazine 17-Round 9mm For SAR9 Pistol Retail: $39.99	Sar Usa	$32.00	—
Sar USA SAR9 Magazine 19-Round 9mm Luger Steel Black SAR919 Retail: $36.92 4.16 oz	Sar Usa	$33.22	—
SAR USA SAR9 Magazine 9mm 10-Round SAR9SC-10 Retail: $37.36 2.64 oz 8.20"	Sar Usa	$29.40	—
Sar USA SAR9 Magazine 9mm Luger 10-Round Black Steel Retail: $43.98 3 oz	Sar Usa	$43.98	—
SAR USA SAR9SC-12 9mm Magazine 12-Round Subcompact Retail: $29.40 2.48 oz	Sar Usa	$29.40	—
SAR USA SAR9SC15 9mm Magazine Sub-Compact 15-Round for SAR9 Platform Retail: $36.92	Sar Usa	$33.22	—
Sar Usa SAR9 SC Magazine 9mm 17rd Retail: $42.24 4.48 oz	Sar Usa	$33.22	—
SAR USA SAR9 SOCOM SOCOMOD-17 9mm Magazine Retail: $42.24 4 oz 9.00"	Sar Usa	$32.56	—
SAR USA SAR9 Sub-Compact 9mm Pistol Magazine SAR9SC15 Retail: $48.98	Sar Usa	$48.55	—
SAR USA Socom 9mm 10rd Magazine Black Retail: $36.92 4.24 oz	Sar Usa	$33.22	—
SAR USA Socom 9mm 17rd Magazine Black Retail: $36.18	Sar Usa	$33.22	—
SAR USA Socom 9mm Compact Magazine OD Green 15rd Retail: $36.18	Sar Usa	$32.56	—
SAR USA SOCOMCBL-10 Magazine for SOCOM 9mm 10-Round Black Retail: $36.92 3.52 oz	Sar Usa	$34.83	—
SAR USA SOCOMCOD-10 SAR9 Magazine 9mm 10-round CMP OD Green Retail: $42.24 3.44 oz 8.20"	Sar Usa	$34.83	—
SAR USA SOCOM Compact 9mm Magazine 15-Round Black AR-15 Retail: $42.24	Sar Usa	$32.56	—
SAR USA SOCOMOD-10 SAR9 9mm Magazine 10-Round OD Green Retail: $42.24 3.52 oz	Sar Usa	$33.22	—
SAR USA ST45 45 ACP 10-Round Magazine ST4510 Retail: $33.95 5.12 oz 8.40"	Sar Usa	$24.09	—
SAR USA ST45 45 ACP Magazine 10 Round Retail: $27.25	Sar Usa	$27.25	—
SAR USA ST45 Pistol Magazine .45 ACP 12-Round Black Steel ST4512 Retail: $34.99 3.52 oz	Sar Usa	$33.95	—
SAR USA ST9 9mm Magazine 10 Round Polymer ST9 Fit Retail: $33.99	Sar Usa	$33.99	—
SAR USA ST9 9mm Magazine 17rd Retail: $31.85	Sar Usa	$30.59	—
Sar USA ST9 Factory Magazine 9mm Luger 10-Round Black Steel with Polymer Ba… Retail: $41.98	Sar Usa	$41.08	—

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