Yep. So we hammer staking castle nuts.
Yet are worried about people loosening castle nuts and losing springs in some well intentioned but misinformed routine dis assembly???
To me anyone having this problem has bigger problems than lost springs to worry about. How many times are they removing the castle nut & end plate? In the field? Heaven forbid they take their grip off! 
didnt know spikes did that. i havent seen that on any of my spikes lowers (3 of them)
That mod was done at the factory to my PSA lower. Liked it so much I did it to my other rifles.
I think itās just a convenience, not a band aid for noobs. I think a lot of the disapproval is due to it being Spikes, not Noveske or another quality company.
If I am not mistaken, threading the takedown detent hole and the bolt catch pin hole was going to be a requirement for CRANE trials. I think they wanted the springs to be captive for changing out different parts and for ease of armorer cleaning. If I can remember where I heard this, I will give credit.
thats the first thing i do to my rifles or ones i buildā¦ is tap that to 4-40 and clip the spring. 
Built up a seekins billet a few weeks back and it had this too. Clipped the spring to fit and it functioned as usual.
Wasnāt impressed enough to go tapping my own gear.
Having had to drill and remove stuck 4-40 allen screws more than once in other applications, Iād really be concerned about dissimilar metal corrosion. Hopefully you used a SS setscrew, and something to seal the raw aluminum.
Mine is maybe two years old, and I donāt have that. I donāt think I would care one way or the other.
Another solution without a problem.
Iām with the OP on this one. I donāt like it either. Glad none of my lowers have it.
Now that I have rebuilt the lower with new parts I just skipped the whole screw thing, luckily they kept it small so I was able to just stick in a new detent and spring.
Whatever floats your boats, guys, but Iāve been doing this to every AR Iāve owned over the last fifteen years. Once a rifle was built, I donāt think Iāve ever had reason to remove the take-down pin, but Iāve changed a lot of stocks and receiver extensions, so why not make the mod? Sure, itās small thing, but one less thing to go wrong.
Unfortunately, I donāt have access to my Spikeās lowers right now to look into this, but I did manage to find the apparent origin of this practice:
http://www.ar15.com/forums/t_3_118/395777_Simple_fix_for_the_rear_takedown_detent_spring_blues____.html&page=1
Read the article on TOSā¦ People selling kits to do this. Then reports of broken taps, stripped threadsā¦ Others saying to use KNS pins instead.
Do people swap receiver extensions so much that this is an issue?
All the pics show mild steel setscrews, I guess they never worry about getting stuck screws out in a few years. Mild steel in contact with raw Aluminum, in an out of sight spot. Not a good idea!
If you feel compelled to do this at least get an Stainless steel setscrew
My thoughts as well. As long as you dont go twisting that RE before you pull the end plate up I just do not see how its possible to lose the spring.
I have a ST Lower (that Iām married to for life) It does not have this.
What is the ādueling dongsā logo?
some people see two penises in the logo instead of the spider, whatever floats their boat
If youāre sporting a stamp for one then donāt ask cause āthe gifā is bound to pop up. Let sleeping dogs lie.
Google spikes tactical dualing dongs
Iām just surprised you found only one thing you didnāt like!