3904 questions

[58619owner]

I recently picked up a near new non Novak 3904 in great shape. One thing I can’t stand are the sights. Rather than try and get trijicon to make a set of SA05’s I was wondering if a model 909 slide would drop on and function properly? Also other than 3904/06 magazines do 909 mags interchange? Thanks and happy holidays!

 

[BMCM]

909 has those rubbish plastic sights and while the rear can be swapped to a steel sight, the front with that immense dovetail cut in the slide cannot. A 915 would be a better fit/choice but then you're back to the old style backsight.

On the other hand. It takes about two minutes to perform a very minor machine op to fit a factory steel Novak backsight to your 3904.

This is on a 669, same op would apply to a 3904 with the old sight. The base dovetail cut is the same as the Novak.

Any local machinist or gunsmith with a mill can do that in a couple minutes.

Cheers
Bill

 

[jsbethel]

At some point, Trijicon started considering the 3904/3906 as compact pistols rather than the full-size pistols that they are. They actually use the SA04 sights contrary to what the website might indicate. They had it right back in the day.

 

[58619owner]

Fantastic info gents. Thank you. I was considering a complete 909 parts kit because they are dirt cheap and available but yes the front sight is still that abomination of a dovetail. But it is still better than the fine sight that came on the 3904. Then there was finding an adjustable sight slide but those toe for what I paid for the pistol. *edit* I just ordered a set of SA04’s so I think this should satisfy my requirements for a more robust and visible set of sights. I have novaks on my 4516 and while fine I like the ledge a standard sight set gives me. My 645 on the other hand has similar sights to the 3904 and I have no issue with those so it is just the minuscule sights on the one.

 

[58619owner]

Another question. Would a single sided safety and spurless hammer from like a 908 fit the 3904? I want to start carrying it as a ccw piece and a spurless hammer would prevent snagging and the single sided safety would make it even slimmer.

 

[jsbethel]

Yes, they will. Also, make sure the pistol has an updated post-recall grip. Look for the dimple on the bottom.

 

[Pizoidian]

Just a heads up, I bought night sights from trijicon I planned to put in my 3913, but the gunsmith had a hard time taking the factory novak sights off, we didn't force it. I'm gonna refund the night sights.

 

[ACEd]

Just a heads up, I bought night sights from trijicon I planned to put in my 3913, but the gunsmith had a hard time taking the factory novak sights off, we didn't force it. I'm gonna refund the night sights.

The sight only comes out in one direction.