One of the rifles I took to my property last weekend was my Kel Tec SU16. The SU is a very light (4.5lbs) nearly all polymer rifle that shoot 223/556 ammo and uses AR mags. I like my ARs but also like sporter type rifles. They tend to be more low profile and are legal in states that banned ARs.
The come in 5 different versions, mine is the B model which I bought used a couple years ago. Was always curious and interested in them and when one came up FS on a local gun forum I got it for a really really good price. Did I mention that it folds in half and that the fore arm fold out into a bipod? Or that it comes with two 10 round mags the fit in the stock (1 30 rounder will fit as well)
It is piston driven with a 16" light barrel w/1:7 twist for heavier bullets.
So I took it to my property to sight in the new Bushnell TRS25 red dot I bought for it. Sighted it at 25 yards then moved back to 50 (using my new shooting platform). Then took it out to the field and 100 yards. The red dot will work at 100, is marginal at 150 and I can't see the target at 200 yards. The rifle was fun to shoot and accurate. I put about 100 rounds through it. That night I dug out an old/cheap 4x scope and mounted it and took off the red dot. The next day I started banging steel at 200 yards. The scope worked a lot better but it's still only 4x at 200 yards. I put another 100 rounds through it.
I did have two issues with it. One is the take down pin is so small that I dropped it in the grass a couple times and it took me some time to find it. The second is that the rifle didn't come with any way to mount a sling. I like using a sling for shooting particularly at long distance. Kel Tec does offer a sling/mounting kit for about $20 on their website so I ordered one when I got home.
In mean time I went to Home Depot and bought a 1/4x1 1/4" hitch pin to replace the take down pin. While I was there I also picked up a same size clovis pin to compare them.
The clovis pin (left) has a lip at one end and a key ring hole at the other. The hitch pin has key ring/hole at one end and a detent retaining ball at the other. The factory pin sits flush on both sides of the stock and you need a bullet point or something to push it out. The hitch pin has the ring you can just pull.
Wasn't thrilled about the ring so I cut a piece of paracord and threaded it through the hole.
I think it looks better...
The clovis pin fits through from the opposite side and is held in place by the key ring.
It's not as quick to take down but creates a saddle ring/mount for a single point sling.
No real good for shooting support but an easy way to carry the rifle.
I also put an old 3-9x scope on it for shooting at longer distances. 4x was okay, but 3-9x would be better.
The SU is a fun little gun to shoot and pretty accurate. I would have no problem using it for SD or if SHTF though I have better rifles for that.