[ETS Mags with TF Basepads]

On 6/11/2018 at 6:31 AM, CalTeacher said:

The TF basepads were not designed for the ETS mags.  There is a significant amount of material blocking follower travel.  Simply modifying the rear of the follower is insufficient with this combo.

 

I’m sure there’s variations between mags, followers and extensions.  

 

I’m currently running an ETS mag with a TF +10 extension. Have about 1000 rounds through it without problems.

 

No mods were made to the extension, only the follower. 

 

Reason I would advise against modifying the extensions, if it’s not needed.  

the extension with oxidize if you expose the bare aluminum.  

 

 

[ETS Mags with TF Basepads]

You need to file the back side(long side) of the follower so it doesn't catch the extension.

Don't need to touch the extension, unless there's a bur.

See below
 

 

[Differences between Glock Lowers]

definitely seems to vary, between lowers.

 

I have both an NFA lower and a JP GMR-13

 

definitely depends on your whole setup as well.

 

I originally ran a JP upper & scs on the NFA lower.  every 5 rounds I would have a FTF or FTE.  switched to the JP lower and zero problems for the past 1000 rounds.

 

I now run a ramped taccom upper and an armaspec SRS on the NFA lower.  no problems for the past 1500 rounds.  

 

All on factory blazer ammo.

Glock factory & ETS mags.

 

I’d imagine hollow points and/or longer OAL’s will affect things as well

[Differences between Glock Lowers]

Biggest downside with the NFA/PSA lower is the slop front to rear of the mag/mag well
 

depending on your bolt, buffer, ammo, &  barrel combo
you may experience nose dive issues in worse case scenarios

 

 

videos worth watching on this topic: