and a question plus observation at the end.
Finished a few days ago and was waiting for a break from the rain to test / zero. Way too muggy but did it this morning.
Stag Arms lefty upper rcvr and bcg
Colt 6920 lower rcvr (factory H buffer)
Faxon SOCOM 10.5" barrel (.081" gas port)
Retro Rifles 3.5" XM177 Moderator / Flash Suppressor (6 slots like A1 flash hider)
Raptor LT ambi-charging handle
CMC Lantac E-CT1 single stage flat trigger w/ anti-rotation pins
Brownells black nitride carbine-length gas tube
Midwest Industries low profile gas block
Matrix 9" (9.56") MLOK handguard
SBA3 pistol brace
MBUS front/rear (remove peep from rear)
Blitzkrieg Chevron front sight post (Green)
Holosun HS510C Reflex / Red Dot
Zeroed hard sights and optic at 50 meters
Took 7 rounds to zero the hard sights and 5 rounds for the optic.
Ammunition was PMC X-TAC FMJ-BT (decent stuff and I have a bunch from sales)
Too hot and muggy. Looked like I'd been swimming.
Shot individual rounds vs groups. 40 rounds total which meant 40 round trips of 100 meters per round trip. lol The walk was partial shade and targets full shade.
Once each was dialed in (using a front sandbag), accuracy was as hoped and expected. Quarter-size easily and much of it was actually nickel with a couple or so almost same holes.
Pistol did very well. Perfect function and not much "kick" or boom at all. Really could tell no difference between this 10.5" and any of my 16" carbines.
All brass tossed about 6-8 ft to a 7:30-8:15 position (that sounds weird). Probably within a 2 ft circle.
This is my second Holosun and really like it. 2 moa dot w. 65 moa circle. It'll display both or each singularly.
Wasn't quite sure what to expect from the chevron post. It's adjustment is in increments of 180* vs 90* for a standard front sight post. I lucked out and as it turned out, I didn't need to compensate my POA due to that lack of finess. Hope I got this right. One side only has the chevron thus more turns are required to observe the chevron. Nice bright yellow in day light and it lumineces a bright green in low / no light after charging. It did very well against cheap, lily-white paper plates.
The SBA3 brace did very well. Hard to beat its quality Though the brace is compatible with any mil-spec carbine extension, I found it had only 3 positions where it locked in on the Colt tube. The Colt on Colt is 4 position. The SBA3 with its included tube is 5 position. With the brace fully forward on the Colt tube, its not locked in. I don't see that as an issue.
All in all, I could not have asked for better. I took an H2 and H3 along but did not try them.
Question: Another guy on another forum has possible malfunction issues with his 2 new Faxon barrels. https://www.thehighroad.org/index.php?threads/my-2-new-faxon-5-56-ar-15-barrels-are-too-overgassed-sigh.838939/ His second posted photo shows groups of tossed brass. The group of 3 on the right is exactly my brass looked like today, however, I had no malfunctions and was very pleased up and and down. His pic is better quality than mine. What's causing those "marks"? Chamber? Any concern?
Here's a random sampling of my brass. It's like a zillion smudgy circles totally around the brass. Can't feel them at all yet don't rub out with toothpaste / rag.
Observation regarding the SiteGlo paint.
I applied a drop to a black piece of plastic. It'll glow ok when charged however it's also advertised as being "fluorescent' in the light. Look at the upper left dot. Not much there. Disregard the dot beneath it. Look at the larger dot and the mess on the napkin. Very fluorescent. The difference in dots is put a drop of white paint down, let it dry, then applied the SiteGlo. It's very thick stuff and probably perfect for covering white dots on pistols and such. Believe it's too thick to attempt on those crosshairs I have. When I saw the napkin, I said AHA!
Edited by bamashooter, Jul. 19 2018 - 06:48 AM.