Rated 5/5 based on 8 customer reviews
Item Number: 500C-HD
 Review Average:  
 Number of Reviews: 8
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Detailed Description

ETM Heavy Duty/+P rated .45 ACP magazines with Wilson Combat exclusive stainless flatwire MAX magazine spring and our time-tested stainless steel ETM tube.
Guaranteed to never need replacement, the ETM with MAX spring will change the 1911 magazine forever. Our testing has shown these to be the most reliable 8 round, .45 ACP 1911 magazines in the world.

The heat-treated MAX flatwire construction never gets stressed or over-compressed like a conventional spring and is guaranteed tonever require replacement even after high round counts or daily, extreme duty use.

  • Maximum strength-up to 25% stronger than standard 1911 mag springs for superior reliability with defensive and +P loads and more positive slide lockback.
  • Maximum longevity MAX flatwire spring will never lose optimum feeding tension as long as you own the magazine -guaranteed! Extensively tested by the Wilson Combat Shooting Team and testfire crew.
  • Maximum corrosion resistance-heat treated stainless MAX spring won’t corrode in high humidity or marine environments-a leading cause of service pistol spring fatigue.

The ETM Heavy Duty/+P retains all the features of the standard ETM magazines:

  • Increases Reliability in ALL 1911 Pistols
  • Aircraft Grade Certified Stainless Steel Tube Resists Corrosion
  • The ETM has the Strongest Magazine Tube Yet Developed, Virtually Eliminating Feed Lip
  • Cracking, Tube Spread and Cracking and General Fatigue
  • .025" Tube Walls - Thickest in the Industry
  • Refined Radius for Each Bend in the Tube to Take Advantage of the Strength in the Stainless Steel
  • Proprietary, Custom Designed Welding Process
  • Proprietary Multi-Step Tumbling and Finishing Process Provides Smooth Follower Operation and Insertion into the Weapon
  • Observation Slots Moved to the Rear of the Tube, Located Exactly Where They Need to be to Maintain the Structural Integrity
  • Innovative Follower Design With its Extended Skirt Ensures Stability in Operation and Minimizes Creep from the Tube when the Magazine is Empty
  • Fiber-Fill Nylon Self-Lubricating Follower Provides Smooth Round Feeding
  • Positive Slide-Lock After the Last Round has been Fired
  • The ETM Seats and Locks in the Weapon with the Slide Down
  • Removable Base Pad for Easy Maintenance and Versatility with Different Base Pad Options
  • The Quality Control Behind the ETM Promises a Lifetime of Smooth and Reliable Operation
  • No-Risk Service Policy - If It Breaks from Normal Use, We Replace It!

NOTE: Magazines equipped with the MAX spring will feel stiff for the first few times they are loaded and will initially require more pressure to seat in the gun. For best results load and unload your magazines a few times prior to your first range session and keep them fully loaded for a few days prior to first use if possible. This will allow your MAX spring to take a set at the optimum rating for a lifetime of service use.

Disassembly / Maintenance Instructions

Our magazine tubes have a lifetime satisfaction policy. Wilson Combat will replace any magazine tube that spreads, cracks or becomes unusable during normal use. Wilson Combat magazine springs and followers are considered consumable items and may require replacing after extensive use. Polymer baseplates can break if you drop a loaded magazine on a hard surface. We recommend metal baseplates for hard use.

Spreadsheet of Magazine Compatibility by Brand

Wondering which of our magazines will fit your gun? Click here to view our magazine compatibility document.

We have 2 basic sizes of 1911 magazines- Full Size and Compact.

Full Size Magazines
Full size is the traditional USGI 1911 frame size. Most 1911 pistols are "full size". This includes all of our Full Size models listed here in addition to most standard, 5" and Commander length 1911 pistols.

Full size grips have a measurement of 3.0625" of center-to-center between the grip screws.

Compact Magazines
Compact denotes a smaller frame similar in size to Wilson Compact, Colt Officers ACP or Kimber Compact / Ultra Series. This includes all of our Compact models listed here in addition to most standard Officer's length 1911 pistols.

Compact grips have a measurement of 2.6875" center to center.


Click Here to View Our 1911 Magazine Troubleshooting Guide


Basepad Guide

Click Here to View Our Basepad Guide

 Product ReviewsClick here to review this item
I can run hollow points now on my 1911
My GI spec 1911 would jam on everything except ball ammo. I read on on some 1911 forms WC would solve my problems. I’m very happy I took the gamble excellent product!
Best 1911 magazine if you have a magwell!
Feels solid and well made, and for me is worth the could be the best except that I just felt it was too long for use in a 1911 without a magwell, it is sticking out by around 1/4..i know that it needs to be that long because it was designed to be a dedicated 8 round mag, and to accomodate the faltwire springs, but it made my 1911 looked unfinished with the portion of the magazine sticking out even if It has a low profile steel basepad...
HD Flat Spring Mags 45 acp
I bought about 15 of these mags and have shot a lot of +P 45acp rounds through them. They function perfectly. Now Wilson needs to put the flat springs in the 10 round mags. The flat spring mags are a must if you shoot +p loads and a must for total reliability. Brilliant idea Wilson.
superb magazine
I picked up one of these bad boys the other day and I noticed the difference immediately. The gun worked so much better
Im in heaven !
I have purchased three of these clips.They are every bit as good as the product information summary states. This clip has fed every hollow point without flaw ! Shooting rapid or slowly. This is the finest magazine I have ever encountered ! This is a definite ten+ product in every aspect. Thank You, Guy
The best 1911 magazine in the market!
I bought 2 of these new magazine offering from Wilson Combat with the flat spring for my Ruger 1911 and fired 200 rounds and fed flawlessly without any problems. 1911 gun owners try this mag and you will be one satisfied owner of this one of a kind magazine.
Great mag
Bought one to try it out . Lockup improved on my trp and its heavy duty . Its wilson itll work in any 1911!
This is a very good quality spring Wilson sells the best springs for your 45 ACP

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