It amuses me that none of the “flat dark earth” parts actually match. The total build is as follows:
- A bare, never-built DPMS AR lower I picked up back in 2008 to celebrate Our Glorious President’s election.
- DPMS Lower Parts Kit, minus the trigger group
- Chip McCormick Single-Stage Flat Trigger
- Dead On Arms Pin-Less Oversized Trigger Guard
- Phase 5 EBRv2 Extended Bolt Release
- Bravo Company Machine Gunfighter Grip, Mod 2
- KAK Industries Super SIG SB-15 Pistol Buffer Tube
- Sig Sauer SB-15 Pistol Stabilizing Brace
- Carbine Length Buffer
- Carbine Length Buffer Spring
Some lessons learned from my second build…
Buying a lower parts kit from the same manufacturer as the lower alleviated the problems I had with things not fitting, and hopefully purchasing from a “name” manufacturer will prevent exciting problems in the future.
I love that Chip McCormick triggers have abandoned spring clips to hold their trigger pins in place, and instead have moved to torx screws on both sides. I have some concerns that the screws might back out, but Loctite will handle that, and I am much less likely to mar my rifle’s finish with these than with fighting with those bloody clips.
On a related note, the CMC Flat Trigger is completely incompatible with the Phase 5 EBRv2 Extended Bolt Release, or vice versa, depending on how you look at it. The bolt release is far enough back in the trigger well, and the flat surface of the trigger is far enough forward, that I can just barely shove my finger between the two, but would end up with beastly blisters on both sides of my finger tip if I actually fired it. I will be making use of Brownells’ Forever Guarantee to send the trigger group back and replace it with an identical one with a curved trigger – removing the trigger group is easier than removing the bolt release, and I am not sure any other extended bolt releases would not have similar problems.
And speaking of, the Phase 5 EBRv2 was a pain in the ass to install. Since that big armature is permanently attached to its right side, you cannot really use pliers to squeeze the roll pin for the bolt catch into place, like you can with “normal” bolt catches. I figured this would be a more solid assembly, and I was probably right on that count, but I think I will be going with one of the add-on type levers in the future, just to make installation simpler.
On the other hand, the Dead On Arms pin-less trigger guard was as stupid-simple to install as they advertise it to be. My only qualifier on heartily recommending their product is that it rattles slightly when installed.
You can never have too much tape on the pair of pliers you are using to squeeze the bolt catch roll pin into place. Good I have a touchup pen for black finish…
Now I just have to decide what upper to drop on it. I am thinking something chambered in 5.56 with a 7.5” barrel and enough of a forearm to cover the entire barrel up to or slightly past the rear end of a muzzle device that does its best to direct what will probably be copious quantities of muzzle blast forward. I like that the industry is trending away from cheesegrater hand guards, but I do want the ability to at least mount rail segments that can support an AFG, light, and possibly a forward sight if I do not end up with some other receiver-mounted optic. Looks like I might have to get someone to build something for me, from the looks of the COTS market.
And then I will have a 100% legal AR-15 pistol… that just happens to have a funky little device hanging off the back end of it which works pretty well when I hold it against my shoulder and do not blade my body…