FiveseveN Magazine Disconnect Howto

OK, the official Leelaw Method™ FN Five-seveN Magazine Disconnect Disable.

Note: I do not warrant any of the work performed within this tutorial. However, I have had absoloutly NO failures of any kind since I performed this modification to the Magazine Disconnect on my FN 5-7 IOM, and have every expectation that it will work the same for your pistol as it has for mine. Again, I make no guarantees about this, for legal reasons.

On to the tutorial.

I purchased a FN Five-seveN IOM about two years ago, and was overall pleased with the gun except for one feature - the magazine disconnect. A magazine disconnect is, in my opinion, a safety issue, since it could be possible, however remotely, that I need to fire the gun when between reloads, without a magazine inserted, and with a round in the chamber. The magazine disconnect, by virtue of its design, would prevent me from doing exactly that. So I set out to disable mine in such a way that it could be done without damaging the mechanics of the pistol, and also be reversed if need be.

First, the magazine disconnect for the FN Five-seveN must be explained a little bit.

There is a tension bar (it will be pictured/explained in pictures below) which puts downward pressure on the linkage between the trigger and sear. When this tension bar does as stated, it disconnects the trigger linkage from the sear and prevents the striker from falling.

When a magazine is inserted into the magazine well, a "shelf" (for a lack of a better term) on the right side of the magazine pushes UP on the tention bar, allowing the trigger linkage to raise upwards, too. When the trigger linkage is in this upward position it reconnects with the sear and will allow the striker to fall when the trigger is pulled.

Once I recognized the way the magazine disconnect worked, I set out to fix it, and did so, in the most simplistic terms, by manipulating the position of the tension bar so that it always puts upward pressure on the trigger linkage, and always allows the hammer to drop when the trigger is pulled.

On to the method:

1. Engage the safety of the Five-seveN
2. Completely empty the firearm - empty the chamber, and remove the magazine. DO NOT ATTEMPT TO DO THIS OR ANY GUNSMITHING ON A LOADED FIREARM! I can not be held responsible if you injure yourself from attempting this modification.
3. Remove the slide from the frame.


The inside of your firearm should look like this.
Explanation of the parts:
Lower Tension Bar Retainer
Tension Bar
Upper Tension Bar Retainer
Trigger Linkage

Note how the Tension Bar is held in place by the Upper and Lower Retainer. These pieces are plastic and are not in any other way attached to the Tension Bar, other than simple friction. Also note that the Tension Bar is pushing downward on a little "finger" at the bottom of the Trigger Linkage.

4. Insert a small jewelers flat-bladed screwdriver, between the Tension Bar and the frame of the pistol, and gently pry the Tension Bar toward the opposide side of the frame.
5. When the tension bar has cleared the Upper Retainer, use pliers or your finger to pull it upwards, towards where the slide would be.
6. Let the Tension Bar rest on TOP of the Upper Retainer, putting upwards pressure on the Trigger Linkage.


Your pistol should now look like this.


7. Reinstall the slide.
8. Check to make sure that the firearm is completely unloaded.
9. Check for proper function of the firearm. While pointing the firearm in a safe direction: Disengage the safety and pull the trigger, releasing the striker; cycle the slide; pull the trigger, releasing the striker, and hold down the trigger; cycle the slide; release the trigger, noting that the trigger reset functions properly; pull the tirgger, releasing the striker; cycle the slide; engage the safety and pull the trigger - if your striker falls at this point, something was done wrong and you should have your pistol checked by a professional gunsmith immediately!

I hope this has been informative. The modification should be 100% reversible (I verified this today) and your firearm will not be damaged by it. I've put almost 1,000 rounds through my Five-seveN since performing this modification and it has run 100.00%

Disabling the magazine disconnect this way requires NO modification to the magazines.

Please PM me with any questions you may have.

Airsoft Guns - Springer FiveseveN

Airsoft Guns: "Product Information
This FN pistol is one of a kind! It comes with a silencer, red dot laser and a clip that holds 15 6mm bb's. This is a Spring Airsoft Pistol, which means it's powered by a spring and must be cocked for each shot. It's fast, clean, inexpensive and easily maintained; it requires no gas or batteries to operate. Also, Spring Airsoft Guns are the toughest, most durable of all Airsoft Guns, because they’re made with few breakable pieces. If you're looking for a fun, reliable Airsoft Pistol that'll look great and perform even better, you've come to the right place.
Features:
Scale 1/1
Includes:
Silencer
Red Dot Laser
15 Rnd Magazine
25 6mm bb's
Specifications:
FPS: 200
Magazine Capacity: 15
Size: 12 inches long, 5 inches tall
(Click one of the links below to see related guns):
Model: Spring Airsoft Pistols
Type: Airsoft Pistols"

LaserLyte Laser Sub-Compact

LaserLyte Laser Sub-Compact

This item looks like it will also work on the P(S)90TR or P(S)90 with a top rail mounted in front of certain sights (such as the EOTech)

South Park Pundit » Blog Archive » DIY: Plastic More Fantastic

South Park Pundit » Blog Archive » DIY: Plastic More Fantastic

Do it yourself work on polymer pistols. Howto.

Album: Five~seveN

Album: Five~seveN

Probably already noted, but a BUNCH of FsN photos.

AR15.COM :: Forums :: 5.7 Gemtech can

AR15.COM :: Forums :: 5.7 Gemtech can

Shooting Industry Magazine

Shooting Industry Magazine: "FNH USA • (703) 288-1292 • www.fnhusa.com


FN FNP-45 Stainless


FN SLP Mark I

The FN FNP-45 Autoloading Pistol utilizes double-action/single-action operation. It features a high-capacity, ergonomic polymer frame with interchangeable backstrap inserts, accessory rail, ambidextrous frame-mounted decocking levers and magazine release. It has a hammer-forged barrel and loaded chamber indicator. The FNP-45 is available in matte black stainless steel and matte silver stainless steel.

The FN PS90 TR is a compact, lightweight, ambidextrous, triple-rail semiautomatic carbine based on the P90 and chambered in 5.7x28mm. The 10- or 30-round box magazine runs horizontally along the top and fired cases are ejected downward. It has a 16.04' barrel, integral muzzle brake and features closed-bolt operation. It is available with a black or olive drab stock.

The FN SLP Mark I autoloading shotgun features an aluminum alloy 12-gauge, 3' magnum receiver, eight-shot magazine tube and 22' barrel with the Standard Invector choke tube system. The Active Valve system automatically adjusts the exact amount of gas needed to operate the action and two interchangeable gas pistons are included. The checkered matte black synthetic stock is equipped with a premium recoil pad and steel sling swivel studs. An adjustable folding rear sight, red fiber-optic front sight element and Weaver-pattern cantilever optics rail are standard.

FN and C-More Systems introduce low-profile, non-snag 3-dot fixed combat sights for the FN Five-seveN 5.7x28mm pistol, with optional self-luminous tritium elements. The sights are offered as an accessory, with plans to include them as standard equipment on select models of the Five-seveN USG pistol later this year."

5.7x28 would you use this round for self defense?

More "discussion"

FN Five-SeveN Pistols: A new generation of combat pistols?

Yet another discussion thread.

High Noon Holsters

Cowhide and Horsehide holsters
Some models available for the Five-seveN (look for FNH 5.7)

Two P90s and a Five-seveN

Slow motion revolution

Slow motion revolution: "Slow motion revolution

-January 1996

Belgium's FN Herstal has developed a pistol to accept its modern 5.7x28mm small arms round of the P90 SMG. The new round is being offered as a modern replacement for the 94 year old 9mm parabellum. "

NCSTAR.COM - Products - Scope mounts - SCOPE MOUNT

NCSTAR.COM - Products - Scope mounts - SCOPE MOUNT

This may be a cheap option for mounting a scope on the FsN.

Other Featured Articles - Tactical Response Magazine

Other Featured Articles - Tactical Response Magazine: "FN Herstal’s Five-seveN Pistol
by Charlie Cutshaw
The Five-seveN pistol dates to the mid-1980s when FNH began design work on what would eventually become the 5.7x28mm P90 submachine gun (SMG). The 5.7x28mm cartridge was designed to defeat Soviet body armor of the time. The main defeat mechanism is the steel and aluminum cored SS190 bullet. Other bullets in the 5.7x28mm family do not have the SS190’s armor penetrating capabilities. With the demise of the Soviet Union and changing threats, the P90 vision shifted to special operations and law enforcement. "

[Follow the link for the rest of the article.]

A less skewed view of the Five-seveN related to Officer safety

Generally a good awareness article. He does focus on SS190, and ignores the rounds that are comercially available while omiting the fact that SS190 is not made available to non-LEO/non-Gov.

Skewed view of the Five-seveN

I don't agree with them, and I don't think that they have a realistic view of threat/risk management, but here's their opinion:

FN 5.7X28 Preliminary eval

FN 5.7X28 Preliminary eval: "FN 5.7X28 Preliminary eval
Posted By: Ronjo
Date: Friday, 10 March 2006, at 7:21 pm "

I have three easy questions about the Five-seveN that Google can not answer - General [M]ayhem

I have three easy questions about the Five-seveN that Google can not answer - General [M]ayhem

Evolution de l’armement des forces de l’ordre

PDF Document (mostly in French)

Otis Cleaning kit contents

Brand New Otis Cleaning Kit for the FN 5.7x28 pistols and rifles. Everything you need to properly clean your USG, IOM, or P90. Otis model# FG-223-57. 25 piece kit includes

1. Soft Pack Case
2. 8in cable
3. 12in cable
4. 20in cable
5. 2in 5.7mm Patches (10)
6. Bore Reflector
7. Compact Receiver Brush
8. Female Rod Handle (8/32 thread)
9. Male Rod Handle Adapter
10. Mohair Lense Cleaning Brush
11. 1/2oz O85 Ultrabore Solvent
12. P90 Tapered Chamber Brush
13. 5.7mm Bore Brush
14. 5.7mm Chamber Brush
15. T-handle
16. 5.7mm Slotted Tip
17. 5.7mm Obstruction Remover
18. Brass Scraper
19. NATO Adapter
20. Straight Pick
21. Angled Pick
22. End Brush (nylon w/ brass stem)
23. Instruction Sheet for 5.7mm
24. 3in Mini CD-ROM (Military Version)
25. New Fold-out Brochure