BCA bolt-action upper.

[AWS]

As far as I can tell you don't need to leave the buffer weight in. I'm going to leave it out and try it with very reduced weight spring.

 

[Tjkiller]

Well there is that, never thought of that angle.

However, not knowing all the nuances of the laws, the lower is the registered part, so how would have you have a lower to add a bolt action upper to it?

I watched a video of one in action, you better not be in a hurry for a followup shot.

You'd be far better off to drop a barreled action into a chassis.

I ordered one to see what they are like and I'm pleasantly surprised.

I bought a 16" 5.56 wylde bolt upper. I'm not a fan of semi auto firearm, I prefer to manually prepare a rifle or shotgun to fire the second shot. .I've pretty much gotten rid of all my single trigger SxS's and O/U's for two trigger guns. I like the idea of a bolt-action upper. An an inexpensive options of changing fully sighted uppers from varmints and pred to big game without hitting the range.

This upper is a lot of fun. It has some quirks, it needs a loaded mag to work smoothly, if the bolt can lay in the bottom of the receiver it hangs up. When the loaded mag is pushing up against bolt it runs smoothly. It's a bolt and I run 10rd mags with five rounds in them, I also have to clip the springs down in them or it makes the bolt hard to operate. A couple loops off the spring it runs like a regular bolt. Last, with the buffer spring in it is a little discerning as the bolt hits it about halfway through pulling the bolt back, once you expect it it works well plus it gives kind of a forward assist.

The good part it is more than accurate for hunting. I grabbed some loads I loaded for another AR bulk 62gr SP over some 2230 and after getting it sighted in put 5 shots in a 2" circle at 200 yards with a Sightron S1 1.75-5x32 scope.

Next is an inexpensive stripped lower, no buffer, no bolt lock back, and a good drop in trigger and see what it does.

A pretty inexpensive way to build a nice little rig that can go from 223 to 450 Bushmaster with just a change of uppers and mags.

Hope this is interesting for some.

I have put together a few of these, currently running a bca bolt upper with a 22 ARC 22in Shae barrel. Its a smooth feeder and accurate. Couple things, if it is binding with the mag, you may need to modify the lips, Geisselle mags are perfect. The bolt itself has a spring behind it, and it comes out of battery very easy. I milled the bolt notch on mine and put a heavier spring beg
Hind the bolt. Its solid. Why some ask?

All the benefits of a bolt action, clean, higher pressure, quiet, lower maintenance, reliability upgrade. Yet all the modularity of an AR. Cost is what you make it. I like em. On trips i often take a gas and bolt , same ammo and mags.

 

[DoubleUp]

No you don't have to leave the buffer spring and weight in. Yes, some have experimented with making it into a folding stock. There is a lot about how to do that on AR15.com under AR15 Variants.