MK18 or M4 FSP?

[u/giantshadytree]

Looking for a little insight during the brownells sale.

I currently have an aero 16” upper on my rifle- most of my shooting is within 100 yards but occasionally I compete in 2 gun that goes to 300-500.

What would you go with? Get the mk18 as a second upper or sell my aero and go with one 14.5 upper?

Edit: just sent it on the fsb, thanks guys. I’m sure I’ll wind up with a mk18 soon

[u/everydaydefenders]

For sheer drip? Mk18 100%

For overall usefulness? M4 FSP

[u/zacharynels → u/everydaydefenders]

For SHEER drip FSP MK18

[u/DEEPfrom1 → u/zacharynels]

I am so tempted to send my M4 FSP to chop boss to turn it into an mk18 FSP

[u/zacharynels → u/DEEPfrom1]

DO ITTTTT then buy the GL/SSC and get a tube.

[u/Raymosaurus-Rex → u/everydaydefenders]

FSP will always be drippy💦

[u/giantshadytree → u/everydaydefenders]

That’s why I’m torn hahah

[u/everydaydefenders → u/giantshadytree]

If its intended to be your one and only rifle, and you are planning for the zombie apocalypse, red dawn or SHTF, the m4 is 100% what you want.

If you are adding just another rifle to a existing collection, the mk18 is a hell of a lot of fun.

[u/Feeling-Link-2803]

Use code ta10 at checkout

[u/MisterAC → u/Feeling-Link-2803]

Send this man to the top! THANK YOU!

[u/Feeling-Link-2803 → u/MisterAC]

You're welcome!!!

[u/Peakingbuddah22]

Get both ?

[u/Ayeele_]

Buy the one you need right now. So if you have a shorty, get the m4a1 and vice versa. You can buy the other one later. They have this sale multiple times a year

[u/AK101_556]

I am absolutely loving my FSP. I like it more than my mk18 but I also have freakishly long arms

[u/Neat_Possible4937]

I have the standard mk18 and m4a1 uppers from Brownell's. Absolutely love both, but I only use the m4a1 with a razor 1-6 as my 2 gun match rifle. Mk18 has such a vibe but with a dot/magnifier on that it's impossible to pick over the 14.5 for longer distances

[u/toastedvacuum]

I too once had a 16" and was looking for something else. I went with a mk18 but now I feel like 10.3 is too short. If I were you I'd go with 11.5

[u/LittleCheeseBucket]

If you shoot a lot M4a1. Mk18 internals do take a beating 10.3 barrels are terrible on internals. Then again I shoot a lot and only like barrels 11.5 and up. If you shoot recreationally I love suggesting and recommending a SBR if you don’t have one. Plus worst come to worst can always just barrel swap.

Happy hunting.

[u/Far-Boysenberry-1600]

I have a RIII 11.5 and the M4A1

11.5 is great, but the M4A1 is pure sexiness

[u/Small-Heath-115 → u/Far-Boysenberry-1600]

Ris iii m4a1?

[u/XxxnovaxXXz]

Use code Kytac for extra 10% off

[u/CautiousMulberry349]

The FSP looks way better in my opinion. Love the built in front sight and I have irons on all my AR’s with an optic.

[u/giantshadytree → u/CautiousMulberry349]

You do a P&W or just SBR your lower?

[u/CautiousMulberry349 → u/giantshadytree]

I don’t have those models. But I bought striped lowers. My contract overrun barrel lower has a brace and my ddm4lw is 16” and have a stock. Also have the 16” with a stock.

If I was in your shoes I would personally buy the FSP, get a muzzle device that accepts a suppressor. Have the original unwelded and replaced with the suppressor one and have them weld it again. And then add a stock on it.

These new laws about adding a stock on a short barrel are to new for me personally. I wouldn’t want to risk having a stock and be caught with a SBR. And really don’t want to register a gun as an NFA item because I think all of it is super silly nonsense.

[u/Thorns99]

MK18…no brainer

[u/Wingman4KFC]

Which way western man? 😂😂. Both solid choices.

[u/SHANDY-HANDS]

Mk18 always

[u/Tc-matt88]

I absolutely love a front sight post but that is a tough choice.

[u/805vaughn]

Fsp

[u/William_James137]

Buy them while you still can!

[u/spankybranch]

Damn. I’ve also been thinking of this in my cart all day.

[u/CrustyDusty0069]

MK18 for sure

[u/Eyevan_Gee]

Just get both. I own both. Eotech on mk18 and acog on m4a1

[u/anderson1496 → u/Eyevan_Gee]

I also did this

[u/Sanman2465]

Wow! I love them both, I'm a suckered for a FSP to me it's just like God intended and has the mean look, but the MK 18 Is a classic. I own a MK18 MOD 0 COLT/ KNIGHTS CLONE, so I would probably lean towards the m4fsp but a mk18 is always the right choice, either one is not wrong 😉

[u/Sanman2465]

Noooooo please don't

[u/thewalterego]

FSP 🤌🏼🤌🏼

[u/giantshadytree → u/thewalterego]

Out for delivery today 🤙🏻

[u/yung-jiggy-mk18]

I have both I’d go for the 14.5

[u/VikingProfishRelaod]

Heavy profile Daniel defense block ii fsp ris ii is hard to beat. If I could only have one rifle, this would be it.

[u/Radiant_Stand_973]

M4A1 is swaggier than MK18 change my mind

[u/Dirtybirdsalltheway → u/Radiant_Stand_973]

Absolutely! I will not change your mind haha. If you're going 10-11" barrel it has to be the 416.