View attachment 760903
I have added a Harris Bi-pod
not shown, Crimson Trace CMR-206 Rail Master® Universal Green Laser Sight, Daniel Defense M-LOK® VERTICAL FOREGRIP, Vortex StrikeFire® II Red Dot, Vortex VMX-3T Magnifier, Geissele Super 42 Braided Wire Buffer Spring and Buffer Combo, H1, MAGPUL MOE® M-LOK® Hand Guard, Rifle-Length – AR15/M4, MOE® Rifle Stock. Should I replace the fixed front sight with a Low Profile Gas Block, and replace the MAGPUL Hand Guard with a Free Floating Hand-guard? I just received a AXEON OPTICS ABSOLUTE ZERO EASY RIFLE SIGHT IN DEVICE - DUAL RED LASER, but I have not tried it yet.
View attachment 760902
Looks like Mil Spec. What would you recommend as an upgrade? I liked the triggers on the M16A1 and M16A2 that I was issued in the Army. What about the Wilson Combat TACTICAL TRIGGER KIT, AR PLATFORM, SINGLE STAGE, SEMI-AUTO, NICKEL TEFLON, 5 3/4 LB?
Nice and good changes that you made to your personal preference, it won't be the last, most of us AR owners continuously upgrade whenever new parts and accessories are available.
I'm going to start with suggested changes that will prevent any future trouble first then followed by the next improvements that you are asking about.
First possible problem is the muzzle brake, most pinned brake without thread on the barrel failed and get launched toward the shooting range, it happens all the time.
That way of attaching a muzzle brake to the barrel is wrong technically and proven bad with all the launched brakes in the past.
If you are in a free state (no ban laws) you should have your barrel muzzle threaded, and install a similar muzzle brake or any other type you want.
If you're in a ban state have the barrel threaded, the muzzle brake pinned and the outer end of the pin welded, usually called pin and welded it is mostly accepted in most ban states, look at your local laws to be sure.
The other thing that might go bad is you replacement buffer and buffer spring, your rifle should use the longer rifle buffer spring and longer buffer for rifles.
Carbine buffer and carbine springs are shorter and should mostly be used on carbines only. Carbine buffer tube, carbine buffer spring and carbine buffer could be used on rifle length 18" to 20" barrels but never mixed with rifle and carbine parts.
For the front sight it is not necessary to replace it with a low profile gas block, it is only required if you want to use a free floating handguard.
Using a scope at over 3X magnification the front sight gets blurry like a ghost, and at higher magnification almost disappears.
Your rifle have a large pin size 0.170" diameter compared to normal mil-spec small size pins of 0.154" and the large pins trigger sets are usually slightly more money than small pin size.
I've got a Geissele two stage trigger (small pins) on my main 6920 M4 carbine that have a clean smooth trigger break of 4 pounds, it's my favorite maybe later I'll get a better Geissele SSA.
LaRue Tactical triggers are also good for less money, but make sure you look for triggers with large pins 0.170", they're available but with fewer brands than the small pins triggers.
I had been a long time Colt AR owner for around 50 years now, currently I have 4 Colt carbines and one 20" standard government profile barrel rifle.
I had a Colt AR-15A2 R6600 HBAR from 1986 up to 2001 which I mainly used for DCM/ CMP rifle matches from the mid '80s to the mid '90s.
Let us know if you have any other questions.