Dumb question re: S&W Model 41

[Sharptail]

Love 'em or hate 'em, you have to admit that the Smith & Wesson Model 41 .22 LR pistol is a unique design. Complicated too, with lots of parts and features.

The 41 breaks down by pulling down on the trigger guard. It is hinged at the rear, and the guard swings down to allow disassembly.

That opening trigger guard makes standard, two piece trigger locks useless - you just pull down the guard, pull off the lock and snap the guard closed again.

Useless they may be, but are they legal? Bearing in mind that

An individual may transport a restricted firearm only if
(b) it is rendered inoperable by means of a secure locking device;

If one knows that the design of the gun renders a trigger lock ineffective and uses it anyway, it would seem that one would be in breach of the law.

This wouldn't be so bad if it weren't for another of the 41's features, the barrel extension which runs rearward over top of the slide. This makes the use of a cable lock impractical.

What "secure locking device" should a Model 41 owner use to legally transport his firearm?

I am not losing any sleep over this issue, and surely there are other restricted arms which cannot use conventional locking devices. What is recommended?

Sharptail

 

[trubluscrew]

I store my M41 in a Costco safe (so I don't trigger lock in the house). When transporting, I use a cable lock. I pull the slide back, and put the cable down the ejection port and out the bottom of the mag well. I then slowly release the slide and the action won't close totally due to the cable lock. I figure, the amount of it's left in this precarious positon, it won't damage the gun.

I've also seen guys transport their M41 in two pieces. Cable lock the frame and have the slide off.