5.56 Timeline

On ported Glocks

Every so often people ask about the ported Glocks.  As an owner of a Glock 19c, a ported 9mm compact, I can answer those question.

Q:  Does the porting reduce recoil?

A:  Yes, by a small amount.

Q:  Will the porting make the firearm louder?

A:  Yes, it is very noticeable firing indoors.

Q:  Does the ported 9mm Glocks shoot jets of flame from the ports?

A:  Only if you use really poor quality ammunition with no flash suppressant.  Even then, the blast from the muzzle will far surpass the blast from the porting.

Q:  Are there problems from shooting in a retention position with a ported Glock.

A:  Not if you cant the pistol slightly away from you.

Q:  Will carbon build up on the front of my front night sight?

A:  Yes, but not enough to prevent its use.(Under normal firing conditions)

Q:  Will the carbon buildup on the barrel and slide be hard to clean?

A:  No harder or longer then cleaning a standard Glock.

Q:  Is it worth getting a ported 9mm.

A:  No, however other calibers might benefit more from porting.

Notes on the FN SCAR rear sight

There is some confusion to the FN SCAR rear sight.  Hopefully this will help clear things up.

The windage is 1 MOA clicks.  There are 36 clicks of adjustment for windage, so 18 from one end will put you in the middle.

Elevation adjust is 1.5 MOA per click.  There should be enough adjustment to go below the 200m mark and have a 100m zero, and plenty of adjustment past the 600m mark.

Ideally the rifle should be zeroed with the front sight, and the rear sight left mechanically zeroed and only adjusted for wind or distance.



Guns and Ammo posted an interesting article on the Army’s new M855A1 “green” ammo.  This confirms prior rumors of it being high pressure and inaccurate.  However there is no mention regarding the rumors that M855A1 fouls more then M855.

Sadly, it sounds like there is little good to say about the new M855A1 round.