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M400 Enhanced

12K views 41 replies 25 participants last post by  Harleyduo 
#1 ·
Hello,

I have a M400 Enhanced and would like to do some work to it. I have been looking at a few upgrades. Just need some advise.

Trigger: Timney .154 3lb or 4lb

Muzzle Brake: SJC Titan

I was also thinking of getting a 12in quad rail, but not sure who to buy it through.

And last a Hydrolic buffer. A friend told me about them but not sure if they are worth the cost..... THANKS GUYS
 
#6 ·
Love my M400 E

First AR I have owned. However, so far so good! I have had mine for about 5 months. When I did get the chance to shoot, it ran like a champ using different mags, ammo. The only jam was my fault (rooky mistake). Still like the M400 over the Colt. Didn't like the wobble between the upper and lower on the Colt. The sig was like one piece. After seeing the round go through a pressure treated 4x4 at 45 yds. I do have some questions to the pros:
Has anyone hog hunted with the M400?
Thanks!
KLC
 
#7 ·
Welcome from Pa. My M400 shoots as good or better than my colt .
 
#8 ·
Thanks for the welcome Lourx!
KLC from GA. I did a ton of research before I purchased mine. Since the M400 Enhanced was "relatively" new I relied on Sig's reputation. Reading blog after blog and had to filter out the "sig haters" and focus on what the folks that actually had one were saying about the sig. Now I just have to stop buying things for it!
 
#19 · (Edited)
Here are the mods/adds I have made to my optics ready M400:

BCM Compensator
BCM Mod 4 Charging Handle
BUIS
Aimpoint Pro Red Dot Optic
Magpul Forend
Magpul Angled Grip
Magpul Pistol Grip
Magpul Trigger Guard (to fill that dastardly gap!)
Magpul CTR Carbine Stock
Streamlight TLR-1 with Remote
Geissele Super Dynamic Combat SD-C Trigger
Blue Force Gear 2-Point Sling (the cotton one with metal buckles, not nylon)

I obtained my Armorer's Certification from Sig Sauer Academy in May of this year so anything I do to my rifle will NOT void the warranty and I get a great discount through Brownells.

After many courses at Sig this year, many of them rifle, I have taken the instructors recommendations and applied them to my rifle. Why? Because most of my instructors are current law enforcement or military and they have tried and tested a lot of stuff and know what works. And so far, my additions and modifications have not disappointed. And you would be well served with a 2 stage trigger like the one from Geissele...awesome!
 
#12 ·
keep this in mind - any modifications made void the lifetime warranty so I would keep it to easy mods that can be put back to stock if you had to send it in for repair

Buffer and spring,
verticle handle's
scopes

maybe charging handle but I wouldnt mess with the trigger - but that is just me.

Personally my Sig shot great out the boxbut have been told about upgrading the Buffer in which case I may do at some point.
 
#13 ·
You can easily get carried away. Lol. Get some good optics and a nice sling. I put an acog on mine and a magpul sling I'm very happy with it.


Sent from my iPhone using Tapatalk
 
#21 ·
I know what you mean! I changed the magpul forend to a OD green aluminum quad rail from Acid tactical. However, it didn't quite match the magpul OD green furniture my rifle came with, but I don't mind one bit! Also added a magpul angled forgrip 1 in OD green & an M16 BCG. Got a voodoo OD 1 point sling & a cheap BSA dot site. Next time I will get a bad lever. So far, love all the upgrades!:)
 
#14 ·
5.56X45 is not the best hog stopper. Enjoy your new rifle!
 
#15 ·
Just got my M400 on friday. Hit the range saturday due to a private event at the range that evening. I put 400rds. Down range and only had 2 feed failures that I contribute to the ammo I was using. I used 4 30rd Magpul mags and they all operated excellently!:) Shoyld be picking up some optics here in the next week or so for it!:)
 
#16 · (Edited)
Welcome, Josh. An oversized latch on the charging handle, a quick release front sling mount and optics are the immediate mods I'd recommend. Trigger change - put 1000 rounds through it and see what you think prior to making that change. New buffer - no. Enjoy!

Should be picking up some optics here in the next week or so for it!:)
Sounds like a good day! Which glass are you considering?
 
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