UPC 656813108138 from 56 retailers

  • Magazines
  • 9mm
  • Warne
Shipping:

Warne MESW54BLK Magazine Extension made of 6061-T6 Aluminum with

Price History
WARNE M&P 9/40 MAG EXTENSION BLK
Shipping $20
$36.23/ct $36.23 Custom Creatives Group ★★★★★ (24)
WARNE M&P 9/40 MAG EXTENSION BLK
$36.79/ct $36.79 MCM Tactical ★★★★★ (60)

UPC 656813108138 Price Graph

  • Today's low of $36.23/mag is more expensive than 40% of daily lows in the last 180 days.
  • Today's average of $42.67/mag is cheaper than 83% of daily averages in the last 180 days.
  • The low peaked at $36.79/mag on May 28, 2026 and bottomed at $35.99/mag on October 21, 2026.

WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
Shipping $10 Free Shipping > $100
$39.99/ct $39.99 Conkey's Outdoors ★★★★★ (175)
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
Shipping $10
$39.99/ct $39.99 AZ Arms Depot ★★★★★ (229)
Warne S&W M&P 9mm/.40 Magazine Extension +5/+4 Black
Shipping $10
$39.99/ct $39.99 Alexander's Store ★★★★★ (1,532)
WARNE M&P 9/40 MAG EXTENSION BLK
Shipping $11
$39.99/ct $39.99 Underground Tactical
Warne MESW54BLK Magazine Extension made of 6061-T6 Aluminum with Hardcoat Anodized Black Finish for S&W M&P Magazines (Adds 5rds 9mm Luger, 4rds 40 S&a
Shipping $11
$39.99/ct $39.99 Selway Armory ★★★★★ (186)
WARNE M&P 9/40 MAG EXTENSION BLK
Shipping $13 Free Shipping > $500
$39.99/ct $39.99 Axolotl Arms ★★★★★ (126)
WARNE M&P 9/40 MAG EXTENSION BLK
Shipping $14 Free Shipping > $500 CC Fee 3%
$39.99/ct $39.99 Minutemen Defense ★★★★★ (54)
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
Shipping $15 Free Shipping > $500
$39.99/ct $39.99 Kinetic Armory ★★★★★ (3)

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WARNE M&P 9/40 MAG EXTENSION BLK
Shipping $15 Free Shipping > $149
$39.99/ct $39.99 Extreme Products ★★★★★ (83)
Warne Magazine Ext,S&W M&P 9/40 +5/9mm,4/40Blk
Shipping $15 Free Shipping > $500
$39.99/ct $39.99 BuyAGun ★★★★★ (3)
WARNE M&P 9/40 MAG EXTENSION BLK
Shipping $15 Free Shipping > $500
$39.99/ct $39.99 Hollow Point Arms ★★★★★ (8)
Warne MESW54BLK Magazine Extension made of 6061-T6 Aluminum with Hardcoat Anodized Black Finish for S&W M&P Magazines (Adds 5rds 9mm Luger, 4rds 40 S&W)
Shipping $15 Free Shipping > $500
$39.99/ct $39.99 Garrison's Guns ★★★★★ (21)
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
Shipping $18
$39.99/ct $39.99 Sharp's Shooting Supply ★★★★★ (34)
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
Shipping $19 Free Shipping > $750
$39.99/ct $39.99 Riddle Firearms
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
Shipping $20 Free Shipping > $1,000
$39.99/ct $39.99 Dave's Guns ★★★★★ (28)
WARNE M&P 9/40 MAG EXTENSION BLK
Shipping $20
$39.99/ct $39.99 JB Armament ★★★★★ (126)
WARNE M&P 9/40 MAG EXTENSION BLK
Shipping $20 Free Shipping > $1,000
$39.99/ct $39.99 Life2A ★★★★★ (3)
WARNE M&P 9/40 MAG EXTENSION BLK
Shipping $20
$39.99/ct $39.99 Down Range Firearms ★★★★★ (8)
WARNE M&P 9/40 MAG EXTENSION BLK
Shipping $25 $25 Off Orders $200+ Code LOCKNLOAD25
$39.99/ct $39.99 Scottsodg.com
Warne MESW54BLK Magazine Extension made of 6061-T6 Aluminum with Hardcoat Anodized Black Finish for S&W M&P Magazines (Adds 5rds 9mm Luger, 4rds 40 S&W)
$5 Off Code CALIBERKING
$39.99/ct $39.99 Gun Place ★★★★★ (206)
WARNE M&P 9/40 MAG EXTENSION BLK
Free Shipping > $250 $15 Off Orders $75+ Code CALIBERKING
$39.99/ct $39.99 Brickhouse Firearms
Warne MESW54 Magazine Extension for S&W M&P 9mm Luger and 40 S&W
Free Shipping > $500
$39.99/ct $39.99 Shooting Surplus ★★★★★ (193)
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
Free Shipping > $1,250
$39.99/ct $39.99 Nadir Solutions ★★★★★ (18)
WARNE M&P 9/40 MAG EXTENSION BLK
Free Shipping > $500
$39.99/ct $39.99 Timber Hole Outdoors ★★★★★ (6)
WARNE M&P 9/40 MAG EXTENSION BLK
Free Shipping > $900 CC Fee 3%
$39.99/ct $39.99 Armed in Michigan ★★★★★ (714)
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
$39.99/ct $39.99 Pickett's Mill Armory ★★★★★ (26)
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
$39.99/ct $39.99 Pathfinder Militaria ★★★★★ (106)
WARNE M&P 9/40 MAG EXTENSION BLK
$39.99/ct $39.99 Utah Fast ★★★★★ (101)
WARNE M&P 9/40 MAG EXTENSION BLK
$39.99/ct $39.99 Birmingham Hill Armory ★★★★★ (16)
WARNE M&P 9/40 MAG EXTENSION BLK
$39.99/ct $39.99 Precision Gunworks
WARNE M&P 9/40 MAG EXTENSION BLK
$39.99/ct $39.99 The Arsenal Project ★★★★★ (16)
WARNE M&P 9/40 MAG EXTENSION BLK
$39.99/ct $39.99 EK Tactical ★★★★★ (10)
Warne MESW54BLK Magazine Extension made of 6061-T6 Aluminum with Hardcoat Anodized Black Finish for S&W M&P Magazines (Adds 5rds 9mm Luger, 4rds 40 S&W)
$39.99/ct $39.99 2 If By Sea Tactical ★★★★★ (135)
WARNE M&P 9/40 MAG EXTENSION BLK
$39.99/ct $39.99 Ecommerce Arms
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
$39.99/ct $39.99 Get Guns N Ammo
WARNE M&P 9/40 MAG EXTENSION BLK
$39.99/ct $39.99 Patriotic Firearms
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
$39.99/ct $39.99 WTW Arms ★★★★★ (68)
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
$39.99/ct $39.99 Black Bayou Armory ★★★★★ (83)
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
$39.99/ct $39.99 Big Bee Bee ★★★★★ (11)
Warne MESW54BLK Magazine Extension made of 6061-T6 Aluminum with Hardcoat Anodized Black Finish for S&W M&P Magazines (Adds 5rds 9mm Luger, 4rds 40 S&W)
$39.99/ct $39.99 Shiner Tactical ★★★★★ (6)
WARNE M&P 9/40 MAG EXTENSION BLK
$39.99/ct $39.99 Allied Arms ★★★★★ (310)
WARNE MAG EXT S&W M&P 9/40 +5/4 BLK
$39.99/ct $39.99 Vital Defense ★★★★★ (14)
Warne S&W M&P 9/40 Magazine Extension, +5/+4, Black
$39.99/ct $39.99 Georgia Guns & Ammo ★★★★★ (2)
Warne MESW54BLK Magazine Extension made of 6061-T6 Aluminum with Hardcoat Anodized Black Finish for S&W M&P Magazines (Adds 5rds 9mm Luger, 4rds 40 S&W)
$39.99/ct $39.99 Tungsten Creek Tactical
WARNE M&P 9/40 MAG EXTENSION BLK
$39.99/ct $39.99 Don's Weaponry ★★★★★ (252)
WARNE M&P 9/40 MAG EXTENSION BLK
$39.99/ct $39.99 CLB Guns ★★★★★ (45)
Warne MESW5/4BLK Magazine Extension made of 6061-T6 Aluminum with Hardcoat Anodized Black Finish for S&W M&P Magazines (Adds 5rds 9mm Luger, 4rds 40 S&W)
CC Fee 3%
$39.99/ct $39.99 Cornerstone Arms ★★★★★ (373)
WARNE M&P 9/40 MAG EXTENSION BLK
$40.00/ct $40.00 Highland Arms ★★★★★ (49)
Warne S&W M&P 9mm +5 Magazine Extension, Black - MESW-5/4BLK
$40.99/ct $40.99 Palmetto State Armory ★★★★★ (1,164)
Warne MESW54BLK Magazine Extension made of 6061-T6 Aluminum with Hardcoat Anodized Black Finish for S&W M&P Magazines (Adds 5rds 9mm Luger, 4rds 40 S&W)
Free Shipping > $700
$42.17/ct $42.17 Freedom Firearms ★★★★★ (2)
Warne MESW54BLK Magazine Extension made of 6061-T6 Aluminum with Hardcoat Anodized Black Finish for S&W M&P Magazines (Adds 5rds 9mm Luger, 4rds 40 S&W)
$42.55/ct $42.55 Bulletproof Outfitters ★★★★★ (133)
WARNE S&W M&P 9MM 5 ROUND MAGAZINE EXTENSION
Free Shipping
$42.99/ct $42.99 Bereli ★★★★★ (1,013)
WARNE M&P 9/40 MAG EXTENSION BLK
$43.34/ct $43.34 Firearms Express
WAR MAG EXTEN S&W M&P 9/40 RD5
$45.99/ct $45.99 Coastal Firearms
WARNE S&W M&P 9MM 5 ROUND MAGAZINE EXTENSION
Free Shipping
$178.99/ct $178.99 Bereli ★★★★★ (1,013)

UPC 656813108138 Price Graph

  • Today's low of $36.23/mag is more expensive than 40% of daily lows in the last 180 days.
  • Today's average of $42.67/mag is cheaper than 83% of daily averages in the last 180 days.
  • The low peaked at $36.79/mag on May 28, 2026 and bottomed at $35.99/mag on October 21, 2026.

Daily Deals Email

Gun and ammo deals at their 90-day low.

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