TNA's parts for the JR Carbine

[True North Arms Corp]

hey fine folks,

We got around to stripping a JR Carbine in the shop to see how our parts fit and made some interesting discoveries.

AR-15 Triggers
The super crisp Elftmann 9mm trigger drops right in. CMC triggers fit well too. Would these high-performance triggers be desirable in a pistol calibre carbine like the JR?

AR-15 Handguards
Some folks who installed AR-15 handguards on the JR reported the barrel nut bottoms out on the receiver before the barrel tightens home. Our barrel nut shims of various thicknesses might be the solution to fill in the gap so the barrel hits home. Any JR Carbine users been down this road?

On our copy of the JR we needed two 1.95mm shims to make our regular free-float M-LOK handguards fit just right. If you use a Super M-LOK (clamp style) handguard then we found that a 1.95mm shim plus a 0.9mm gives the best results.

 

[ted_dent]

Tagged

 

[slicknick]

Good to know

 

[lavino]

Will your fake silencer can for 1/2x28 threads fit the JR barrel?

https://truenortharms.com/products/fake-can-suppressor-reverse-style-uscmklsdf

 

[tony9000]

Will your fake silencer can for 1/2x28 threads fit the JR barrel?

https://truenortharms.com/products/fake-can-suppressor-reverse-style-uscmklsdf

threads are only one thing to check, make sure a 9mm round can fit in the hole of the supppressor

 

[coldfire]

where do I find these shims you speak of

 

[grumpyguy]

where do I find these shims you speak of

Re-read the first post where it’s highlighted..”barrel nut shims........”

 

[True North Arms Corp]

where do I find these shims you speak of

barrel nut shims

 

[Loosethoughts]

You guys sell those damn receiver Allen key head screws?

JR USA sells them for $3, but wants $24.95 to ship!

 

[True North Arms Corp]

You guys sell those damn receiver Allen key head screws?

JR USA sells them for $3, but wants $24.95 to ship!

I'll put it on our shopping list to bring in, I'll let you know

In a rush if you can bring one screw to a well-equipped hardware store they should be able to find you a match. imperial not metric

 

[Loosethoughts]

I'll put it on our shopping list to bring in, I'll let you know

In a rush if you can bring one screw to a well-equipped hardware store they should be able to find you a match. imperial not metric

Sweet, thanks!

 

[True North Arms Corp]

You guys sell those damn receiver Allen key head screws?

JR USA sells them for $3, but wants $24.95 to ship!

we've got em now

https://truenortharms.com/ar15_default_store_view/jr-carbine-spare-receiver-screws.html

 

[ted_dent]

tagged

 

[davesja]

I realize this is a very old thread however here are the JR bolt sizes.
Ejector plate screws are 4-40 x 1/4
Takedown screws 10-32 x 3/4

 

[pirate604]

You guys should do up some parts for the FX9, like an enhanced charging handle and some type of bad lever.

 

[FarmerDanz]

I would like to see a short stroke and recoil reduction kit for the jr. Especially since the lack of other options for PCC now.