Sig Sauer M400 vs. Sig Sauer 516 High Speed Video Comparison

http://vuurwapenblog.com/2012/02/09/s...

A high speed video comparison of the Sig Sauer M400 (standard AR-15 carbine) and the Sig Sauer 516 (short stroke gas piston AR) rifles. Same shooter, same ammo.

As I have described previously:

http://vuurwapenblog.com/2012/01/23/h...

The rate at which the bolt carrier assembly recoils rearward can have an effect on reliable extraction and ejection, even if extractor and ejector dimensions and springs are absolutely correct. The period of time during which the bolt is behind the stack of rounds in the magazine, neither traveling rearward or forward, has an effect on reliability in that the magazine may not have enough time to push the next round into place before the bolt comes forward again, resulting in a "bolt over base" malfunction that is most commonly seen on suppressed rifles, as they have much greater rates of fire. Also, high forward bolt carrier velocity can result in extreme bolt bounce, as noted previously, while low forward bolt carrier velocity could mean that there isn't enough force to overcome strong magazine springs, dirt or debris in the action, etc.

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  Education

[99bugout]

That's not even a Sig Sauer Rifle. Not even close.. Those in the video are some other version of an AR-15 A Sig Sauer does not have an Ejection port cover, nor a butt stock coil spring, nor a forward assist assembly. The Sig is a gas piston driven with the recoil spring mounted with the piston in the front grip.. Too Funny..

[VuurwapenBlog]

You are an uninformed moron.

[CountForsycula]

Have you considered making a type of rest for these videos? I love them, but with the variance in shooters I sometimes wonder if I'm seeing a real difference or not.

[VuurwapenBlog]

Almost all of the videos you see me put out feature me as the shooter. I can minimize differences fairly well. However, when I'm traveling, I sometimes have to rely on others to shoot. It's enough of a distraction to carry a camera bag at SHOT Media Day, let alone a rifle fixture, especially when I don't have the time or ammo for a thorough comparison.

[Will Moon]

Do they not seem almost identical? The M400 does seem to have a little higher recoil impulse than the 516 tho, the carrier seemed to push the gun forward in the second video. Did it feel more snappy?

[VuurwapenBlog]

I *thought* the M400 was easier to shoot faster - but drawing overarching conclusions about firearms based on the tiny amount of ammunition you are allowed to shoot at Media Day is not something I would consider professional or accurate.

[lobotomites92]

Wow . good job at making your self look clueless.

[zb0430]

This video has prompted me to get an H2 buffer for my m400 enhanced. What has been your opinion or impression of the m400?

[THEfromkentucky]

You're thinking of a Sig 556. Sig also makes a 516 and an M400 which are shown in the video.

[crich25v]

You are referring to the SIG556. 

[1D5dozer]

Don't raise your hand if you don't know the correct answer, now go sit in the corner.

[hydrashok556]

My god you're stupid.

[clap5]

Your talking about a Sig556...this is a AR Sig516

[majoreet]

WTF are you talking about? Sig makes more rifles than the 556. The sig 556 is based heavily on the AK47. These sig rifles are based on the AR15. Sig sells these rifles as well. Perhaps you should visit their website before making a comment.