Dremeling a new M&P Detonator slide

[Invasian]

So just got my first demel to ensure proper fitting on my Detonator Costa slide on my TM M&P, as it stands it won't cycle all the way back and i can clearly see that i need to dremel the slide so that it would.

Questions as follows:

1)Do i dremel the bottom of the slide first or the inside of the slide first?
2)What bit do you guys recommend i use ?

First time doing this on my own and needless to say I don't want to fuck it up.

Any advice would be greatly appreciated.

cheers,

J

[cav.]

Dremel?? I know Detonator aint smooth, but I dont think you need to dremel it...:S

Do you have any other mods in the gun? My slide works just fine without dremeling, I just polished the rails on the gun.

[Invasian]

No other mods

[MaybeStopCalling]

Holy frig stop!

Dremel should be your last option- it's too easy to turn metal into butter with a dremel and with something that expensive it's a disaster in the making.

1. Polish the slide/rail interface by using a metal polish on the rails, racking your gun multiple times.
2. Use a hand file, frequently checking for fit.

Only when that has failed, do we even consider a dremel.

[Invasian]

Ok great, i will do just that

thanks the tip..ill keep you informed on my progress

[Invasian]

One last thing, do i start by sanding down from the bottom of the slide first or the inside ?

[pestobanana]

You start by finding out where it's getting caught and sand there.

[jordan7831]

I would try lapping the slide. I've used metal polish and about 20 minutes hand racking a slide to get it to run smoothly.

[shelcoof]

Originally Posted by MaybeStopCalling

Holy frig stop!

Dremel should be your last option- it's too easy to turn metal into butter with a dremel and with something that expensive it's a disaster in the making.

1. Polish the slide/rail interface by using a metal polish on the rails, racking your gun multiple times.
2. Use a hand file, frequently checking for fit.

Only when that has failed, do we even consider a dremel.

Holy crap what this guy said!!!!

I would say never use a dremel when it comes to removing any sort of material on a GBB Pistol.

I don't own an M&P but I've modded plenty of Glocks in my life. I have about 7 Glocks to my name as we speak and I've fitted them all with after market slides and parts.

You should start by working the slide in first by racking it back and forth until it starts to get worked in... and seeing from there.

You may not even have to sand anything down it might be something else entirely.

Example BBU sitting too high you may need to shim that a bit or if its sitting too low you may need to figure out if the sights are getting in the way.

Like other users have posted before look to see where there maybe a problem. Check for rattling, height issues.. see if the sights are fitting properly.

Actually start off by putting on the slide without any internals in... see if you have any play, rattle or slide is too loose or tight. If its too tight you already know you'll have to modify the rails.

Figure out if you need to file the side or the top of the rails... make sure not to file to much off. I like using a file and then smoothing it down later with sandpaper. You file too much off it may affect performance of the gun. We all know how finicky some of our guns can be with certain things.

Slowly do this and make sure to check periodically to make sure your not over filing the rails.

Once the slide moves smoothly without any internals installed go ahead and put in the BBU and test it again to see if you can there is any other problems there.

Continue this process... when you do it this way you can easily rule out issues one by one so it can easily help you pin point the problem a lot easier.

Another thing is... make sure to have at least 2-3 mags to work with. Sometimes magazines won't work on one gun but may work on another.

Anyways I hope things work out for you!

[BioRage]

lol this thread

[localfreerider]

I would like to thank Invasian for giving me the opportunity to build his gun and so I thought I would post a quick write up of the work done for people thinking of taking this project on themselves.

On the Detonator Tokyo Marui M&P Slide:
It is indeed a drop on fit with tight tolerances between the slide and frame rails. The CNC work detonator's does is flawless with no tooling or machine marks to speak of. The anodizing is smooth and a consistent color throughout. One surprising and really neat feature is the separate extractor moves to emulate a loaded chamber when in battery. The barrel fit is loose and rattles around a bit when the slide is forward but I believe this to be a positive as the slides movement is arrested by the hop-up chamber and not the aluminum barrel, therefore prolonging barrel life.



On the Tokyo Marui M&P itself:
TM never fails to impress and definitely deserve there reputation for making a great product. The hammer and firing pin are chrome plated and when filing them smooth I did notice they feel like they are made of a harder material than the other cast parts in the gun.



Work done:
I tried to polish surfaces smooth without removing too much material to get a tight frame to slide fit that glides like its on ice. I polished the underside of the blowback unit, the top and sides of the internal frame rails and the casting flash on the hammer. I then resembled it and cycled it by hand a bunch of times to mate the surfaces to one-another. Finally I cut a rubber recoil buffer and put it on the guide rod to prolong the life of the internal frame rails because the force of the slide slamming rearward was marring my fresh polishing job and would have worn the frame rails out prematurely due to the immense kick the blowback unit puts out.




It is now a bespoke hand fitted gun that is very light and kicks like its running on Co2.

**No slides were harmed in the making of this gun!**

[Red Dot]

Looks awesome good job, thinking of grabbing a slide like that for my WE Little Bird but so much money, damn they look nice though.

[Invasian]

Just want to give major props to Local Freerider for doing an awesome job on my new baby.

Slide fits perfectly, and cycles ultra smoothly. Gun shoots incredibly well.

I HIGHLY recommend him for any GBB Pistol work of any kind. Chris puts in alot of care and effort into his work and the results speak for themselves.

Thanks again Chris for your great work and for reaching out to me during this time of need.

Cheers bro.

talk soon.

Jason