Is this still the priority list?
SHTF in a rural area
Home Defense
Subordinate goals in service of the above:
Whitetail hunting
Multigun competition
Tertiary want rather than "need" because I like math and the meditative parts of mastering the fundamentals of marksmanship:
1000 yards
I may have missed it, but I didn’t see any mention of optical/mechanical reliability/durability on a gas gun with heavy reciprocating mass effects that are known for breaking optics. I have seen it personally happen with 6.5 Grendel and Nikon Tactical (discontinued), where the objective piece broke loose.
What I’m tracking is some desire for the following, but not sure of the order:
For SHTF, 18” is pushing towards the longer end but is still doable.
SHTF optics should start off with a regional terrain analysis, and you need to determine the likelihood of the balance between Close Quarters Marksmanship and intermediate range covering observation/fire for people/vehicles in your group if applicable.
But a SHTF optic needs to be reliable first. Anything under that $500 price point normally doesn’t hold up well in my experience, so they are a waste of time and money if you’re serious, especially on a gas gun. When I say, “In my experience”, I mean having watched Grendels, AR-15s, AR-10s, and other semi-auto rifles come through my DM and Carbine courses dating back to 2013, and my own high volume schedule shooting Grendel since 2009 trying multiple optics on Grendels ranging from 24” down to 12”.
These are just a few from 20” down to 12”.
Top is set up for distance out to 1200yds with Leupold HD.
18” LaRue set up for intermediate range/SHTF with GRSC Japanese LOW 1-6x24
16” Lilja set up for hunting/intermediate range DMR with Burris 1.5-6x
12” set up for SHTF/intermediate range SHTF/HD. That set-up surprisingly got me out to 800yds on 36”x24” steel buffalo TGT with 9/10 hot rate with 2 different types of factory ammo, the 123gr Hornady AG and Federal 120gr OTM Match, which have some of the lost BCs of any factory loads out there. Elevation was 6600ft, so air is thin at that range.
You’re basically asking for a scope that smashes the capabilities of all of these into one, which is an extremely tall order.
HD leans towards a smaller carbine/pistol, but an 18” will still do it, provided you practice maneuvering under stress inside the confines of a furniture-filled room at night.
18” is ideal for Whitetail hunting with the right optic. Since most hunting distances are within 200yds, most optics will work fine for that, ambient illumination being a big factor. For the dawn/dusk shots, superior glass wins that game at a premium price, whereas most sub-$1k optics don’t cut it. One exception I’ve found to that is the Vortex Viper 2.5-10x32 PST, but others have had the opposite experience with it. Before my eyes went into the post-40yr drain, I could hit my 12” steel poppers at night out to 565yds with my 18” Lilja Grendel topped with the 2.5-10x32 Viper PST.
Multigun is best served with a high-end LPVO, but can be done with some lesser optics and still allow you to place mid-high pack if you practice more relevant stage management and are up against lesser-experienced competitors. You can have a lot of fun with a decent optic, doesn’t need to be NF, Vortex, Razor, Leica, etc.
1000yds is best-served with higher-end glass quality with repeatable/reliable tracking or really good glass with stadia/tree reticle and side focus.
You’re basically asking in a really long-winded way for a unicorn optic that will do it all, on a budget that barely covers the scope mount, to be attached to an upper that is known for probably the lowest performance in the industry just in terms of chamber specs, concentricity, etc.
When I was in a similar position, I bought my barrel/bolt combos from known/reputable sources and pieced together my upper. I wasn’t on as limited of a budget, but I still like to get deals and be frugal so I can spend more on optics and ammo-the real cost considerations.
For optics, you could find one optic that would cover SHTF, hunting, and Multigun, but it won’t cover 1000yd shooting well. An LPVO will do the first 3. Some of the better, more recent LPVOs will do a marginal job of allowing suppressing fire out to 1k, and the higher-end ones will allow increased hit probability on full IPSC sils at 1k, but will not provide the level of precision as a dedicated LR optic in that space.
I’ve been chasing that rabbit for years now, and the only scope that I think kisses that space costs $2475.
If you’re really limited to the $550 budget, I would recommend the GRSC 1.1-10x30 Full Spectrum Optic for $575, but they’re out of stock.
I have multiple Vortex Viper PSTs, GRSC 1-4x, GRSC 1-6x, and 1-10x LPVOs. If I had to grab just 1 SHTF/Hunting/Multigun/LR optic, it would be the Vortex Razor 1-10x24 Gen III.
If I was limited in budget, I would grab either the GRSC Japanese 1-6x24 or the 1.1-10x30 Full Spectrum Optic if I could find one.
(BTW, none of the electronics, boards, semi conductors, or components in any of the JSF/F-35 variants are made in China. They freaked out when they discovered that a vendor had sourced steel from China for one of the landing gear strut components, and quickly put a stop to that years ago. That’s how tightly-controlled the components are for JSF. They won’t even allow raw materials from China. All the Semi-conductors, boards, and electronic subcomponents are made in the US or UK under strict oversight and Mil-Std/NATO controls.)