One area I didn't touch on was "chassis systems", these are basically abbreviated stocks, made from aluminum that allow you to attach butt stocks, grips and hand guards designed for the AR-15 platform.
We'll start with the Ruger SR-22 model. A few years back Ruger offered this as a standard catalog item. While they are no longer in the catalog you may be able to find a used one (like I did :) )
This next one is from Nordic Components, I am pretty certain that they were the supplier of the chassis Ruger used on the SR-22 model above.
Their AR22 system is made from aluminum and is hard coat anodized in any color you want, as long as that color is black....It uses standard AR-15 pattern grips (including the beaver tail style), as well as butt stocks via mil-spec buffer tube. Standard AR-15 handguards connect to the barrel nut block which is secured to the lower chassis, independent of the top scope/picatinny rail.
Nordic Components designed this to closely mimic the look and feel very much like an AR-15, making it an ideal training tool.
See the Nordic Components website here
This next one is from PMACA Manufacturing, these are machined from a solid billet of 6061-T6 aluminum, then anodized or Cerakoted in ten colors.
These do not have a fore stock, but they do come with a 1.75" picatinny rail for a AFG/VFG. and a free floating handguard is available. The chassis takes a standard AR-15 pistol grip (non-beavertail style) and butt stock.
A model for the take-down 10/22 is also available
See the PMACA website here
This one comes from a 10/22 guru that needs no introduction....Tony Kidd is now offering a chassis made from 6061 T6 Billet aluminum, it features M lock slots on the sides and bottom and uses all standard AR stocks and grips (non-beavertail), see them here
This next one is from Crazy Ivan LLC, this chassis is made from 6061-T6 aluminum and comes in two parts, an upper receiver that mounts to the four #6-48 scope base screws and a lower receiver that mounts via the take down screw.
It takes standard AR-15 grips (non-beaver tail style), handguards and butt stock/buffer tubes.
There were complaints that the handguard was not stable enough and they have seemed to correct that by adding a screw to the rear of the chassis that when tightened, puts pressure on the back of the 10/22 receiver.
See the Crazy Ivan website here
This one is from our brothers in the Great White North. Spectre Ballistics (SBI) is offering their Spectre 10/22 Chassis to interested owners. The unit is CNC machined from 6061 T-6 billet aluminum and uses all standard AR-15 accessories (non-beavertail grip). They also decided to correct the barrel droop problem by using the rear trigger assembly pin as a second take-down screw. They come in hard anodized black, see their website here
This one is from Enoch Industries, I found them on Instagram,
Made from 6061 billet aluminum their Odin Chassis has M lock slots on the sides and bottom and a steel inserts for a 360 sling swivel attachment on either side of the rear of the chassis.
Like all the others the chassis will take any non-beavertail AR grip and the grip adapter is made extra long to cover the empty space between the grip and trigger guard. Where this one really differs is the stock attachment, it uses a vertical picatinney rail.
Their website is here
As you could guess from their name Engineered Silence is a manufacturer of silencers. They also produce a 10/22 chassis
Their chassis is made from billet 6061 aluminum that is type 3 hardcoat anodized. It comes with a two piece hand guard and is designed for take-down models, but an adaptor allows use on a standard 10/22 receiver.
Just like most of the chassis systems, AR-15 parts fit, including beavertail style grips. See their website here
This super lightweight system is from Mod Shot, the main body is CNC machined from billet aluminum, the accessories are offered in aluminum and carbon fiber to keep the weight to a minimum. They come in silver and black and can us any non-beavertail AR grip
This one if from Old Fort Arms, machined from a solid block of 6061 aluminum, the chassis takes all the usual AR-15 accessories. They also offer some options for hand guards
See their website here
Modular Driven Technologies built some prototype chassis for the 10/22 back in 2017, but rumor has it they decided not to go into production due to the variance in production receivers. See the write up from Gear Report here
This next one if from Troy Industries and is apparently no longer being manufactured. Called the T-22 it used a lower receiver that the 10/22 receiver mounted to and an upper rail/handguard assembly that slips over the barrel and clamps onto the front of the lower assembly.
These two are from McRee's Precision, they have multiple options for the stocks crafted from 6061 aluminum. Standard AR accessories fit (not beavertail grips). See them here.
This last one is from Midwest Industries and is for the 10/22 Take-Down model.
Made from 6061 aluminum the chassis is hard coat anodized and is compatible with most AR grips and butt stocks. They have 8" and 13" handguard options as well. See their website here