USMC03's Daily Gun Porn - Friday - WTF, Another LE6920 ?!?

SWAT Colt LE6920:

-Factory Colt LE6920

-14.5" Colt M4 SOCOM barrel

-Gem-Tech Bi-Lock flash hider perminately attached

-LaRue 7.0 rail system

-Tango Down rail pannels

-Tango Down vertical foregrip

-Trijicon TA31 ACOG

-LaRue ACOG Mount

-Troy Industries Dual Apeture BUIS

-Tango Down Battle Grip pistol grip

-KNS non-rotating hammer / trigger pin set

-Vltor stock

-Magpul Enhanced Trigger Guard

-Gem-Tech G5 suppressor (Gem-Tech conversion from a M4-96D to G5)

http://www.coloradoshooting.org/75%2...20ta31%20b.jpg

http://www.coloradoshooting.org/75%2...20ta31%20c.jpg

http://www.coloradoshooting.org/75%2...20ta31%20d.jpg

http://www.coloradoshooting.org/75%2...20ta31%20e.jpg

http://www.coloradoshooting.org/75%2...20ta31%20a.jpg



There is only 4 oz of difference between the Govt profile barrel and the M4 SOCOM barrel (you can tell a *slight* difference in weight). A pic of the M4 SOCOM barrel can be seen here:

www.ar15.com/forums/topic.html?b=7&f=22&t=284588


The reason I went with the Colt M4 SOCOM barrel (heavier profile) is due to point of impact change when using a suppressor. The shorter and stiffer the barrel is, the less point of impact change you will experience once the suppressor is installed on the barrel.

When using a suppressor, you will experience a point of impact change. All of my guns are sighted in at point of aim / point of impact at 50 yards. Here is what I expereince using the M4-96D and the G5 suppressor using both 16" M4 profile barrel and the heavier Colt 14.5" SOCOM barrel:


When I was using the M4-96D in conjunction with the Colt 16" M4 profile barrel, my point of impact was low and to the right (between 4 and 5 o'clock) and approximately 4" low at 50 yards.

After the M4-96D was converted to the G5, the G5's point of impact shifted to approximately 3" low at 6 o'clock using the same barrel at the same distance (host guns were 2 Colt LE6920's).

After switching to the Colt 14.5" M4 SOCOM barrel with the Gem-Tech G5, the groups are only approximately 1/2" between 5 and 6 o'clock at 50 yards.