NEA 10/22 Chassis system
- Thread starter Charles Martel
- Start date
- Location
- East ontario
That looks very nice i must say.
I would guess the reason the 10/22 chassis finish is different then other other Alum parts in the photo is that is Cast or forged.
Our shotgun stock adaptor had the same issue at first, as its a casting from Alpha casting in PQ.
We did manage to get a nice dark black finish in the end, but as CM said a real pain in the ass.
Dip it in some oil that may darken it up a little.
bbb
I would guess the reason the 10/22 chassis finish is different then other other Alum parts in the photo is that is Cast or forged.
Our shotgun stock adaptor had the same issue at first, as its a casting from Alpha casting in PQ.
We did manage to get a nice dark black finish in the end, but as CM said a real pain in the ass.
Dip it in some oil that may darken it up a little.
bbb
We decided to machine it out of billet as we have not had a lot of luck with castings unless using an investment cast.
For those the decide to buy the Chassis, you will notice that both halves are serialized. We did this to ensure both havles were mated back together after plating. The last machine op consists of the upper and lower being bolted together an brought to finish size together so the match is perfect. Somethign we plan to do when we start making AR's in the new year.
Just like the pics?
With a different rail, yes, and its actually less then $200
http://www.fabsports.ca/quad-rail-system-carbin-p-953.html?language=URL_LANGUAGE
https://shopquestar.com/shopping65/shopexd.asp?id=256&bc=no
- Location
- East ontario
Well thats even better!!!
That quad rail isn't free-float. It won't work on your chassis without a barrel nut/delta ring and something on the barrel to hold the front handguard ferrule in place.
Fabsports had 6 pos. AR stocks with buffer tubes for $60. Looks like they're all gone now, though.
Finally got around to installing this on a 10/22 that came out of a nordic stock.
Some of the positive points are:
-monolithic upper rail with standard ar forearms
-very precise mating of the upper and lower.
-qd swivel sockets machined into the side of the housing.
-mounts the forearm very solidly, unlike the nordic, to allow forearm mounted optics and sights to hold zero.
-the lower position of the buttstock keeps the optics lower to the boreline.
Some of the negative points are:
-the need to remove any optics, and the four rail screws in the top of the reciever every time you want to break it down to clean it. Then you have to go rezero the sights again after reassembly.
-mine came with the wrong size of screws for securing the upper to the reciever. They were 6-32 rather than the 6-40's that ruger 10/22 recievers use. I didn't notice until I had buggered the threads in one of the recievers holes. Bad words were said .
-There is a fairly large gap between the inside of the upper and the top of the reciever, the only physical contact they make is through the four upper to reciever screws.
I used bedding compound to bridge that and give it a more secure mounting surface. The reciever to upper interface is pretty critical for accuracy.
-any grips with rigid backstraps (like magpul's) won't fit, there's no room for the backstrap.
-there's no key hole for the buttstock, so stocks like the ace's, magpul ubr's, and any other stock that uses the keyhole to index won't work without some creative modification. I made a shim to go in the buffer tube hole that the ace's tube would bottom out on and have the stock indexed at the proper angle.
-some fore arms won't sit flush with the front of the chassis unless you remove a few mm of material from the front of the chassis.
You can see the little step at the bottom where I've removed material at the forearm/chassis interface in this pic:
-the grip mount that's bolted into the stock wouldn't allow my older alloy trigger assembly to seat all the way in the chassis, I had to clearance the grip mount piece to clear the back of the trigger housing.
To get around the having to remove the upper from the reciever to disassemble thing I made a few modifications to the nea chassis.
Ground out the portion of the "lip" portion of the chassis that prevents the trigger assembly from being pulled straight up out of the stock:
Ground a relief to allow the buffer pin to be removed while the upper is still attached:
And then more or less permanently attached the reciever to the upper with bedding compound and some 6-40 screws of the appropriate length.
No problem with scopes, this height provides a solid, comfortable cheek weld:
Ditto for reflex sights with a low mount:
The nea chassis has some nice features but I think it could use some refining.
The major points are the ability to leave the upper attached to the reciever and still be able to seperate the upper and lower.
Also having a keyhole for the butt stocks to index with.
The rest of the stuff is just fine tuning for future production runs.
Regards,
Nathan
Some of the positive points are:
-monolithic upper rail with standard ar forearms
-very precise mating of the upper and lower.
-qd swivel sockets machined into the side of the housing.
-mounts the forearm very solidly, unlike the nordic, to allow forearm mounted optics and sights to hold zero.
-the lower position of the buttstock keeps the optics lower to the boreline.
Some of the negative points are:
-the need to remove any optics, and the four rail screws in the top of the reciever every time you want to break it down to clean it. Then you have to go rezero the sights again after reassembly.
-mine came with the wrong size of screws for securing the upper to the reciever. They were 6-32 rather than the 6-40's that ruger 10/22 recievers use. I didn't notice until I had buggered the threads in one of the recievers holes. Bad words were said
.-There is a fairly large gap between the inside of the upper and the top of the reciever, the only physical contact they make is through the four upper to reciever screws.
I used bedding compound to bridge that and give it a more secure mounting surface. The reciever to upper interface is pretty critical for accuracy.
-any grips with rigid backstraps (like magpul's) won't fit, there's no room for the backstrap.
-there's no key hole for the buttstock, so stocks like the ace's, magpul ubr's, and any other stock that uses the keyhole to index won't work without some creative modification. I made a shim to go in the buffer tube hole that the ace's tube would bottom out on and have the stock indexed at the proper angle.
-some fore arms won't sit flush with the front of the chassis unless you remove a few mm of material from the front of the chassis.
You can see the little step at the bottom where I've removed material at the forearm/chassis interface in this pic:
-the grip mount that's bolted into the stock wouldn't allow my older alloy trigger assembly to seat all the way in the chassis, I had to clearance the grip mount piece to clear the back of the trigger housing.
To get around the having to remove the upper from the reciever to disassemble thing I made a few modifications to the nea chassis.
Ground out the portion of the "lip" portion of the chassis that prevents the trigger assembly from being pulled straight up out of the stock:
Ground a relief to allow the buffer pin to be removed while the upper is still attached:
And then more or less permanently attached the reciever to the upper with bedding compound and some 6-40 screws of the appropriate length.
No problem with scopes, this height provides a solid, comfortable cheek weld:
Ditto for reflex sights with a low mount:
The nea chassis has some nice features but I think it could use some refining.
The major points are the ability to leave the upper attached to the reciever and still be able to seperate the upper and lower.
Also having a keyhole for the butt stocks to index with.
The rest of the stuff is just fine tuning for future production runs.
Regards,
Nathan
- Location
- Calgary, Alberta
NTM/Nathan, thanks very much for the excellent commentary and photos. This chassis is definately a contender amongst its competition.
