The same components we use for our .22 LR conversions, this bundle includes everything required for your own custom rimfire build:

  1. .22 LR barrel     
  2. LMOS™ bolt assembly     
  3. Special charging handle

Chamber: .22 LR
Length: 18"
Twist: 1:16 button rifled
Contour: .740 straight
Diameter at Gas Block: n/a
Muzzle Threads: 1/2-28 TPI
Material: 416R Stainless
Weight: 37.8 oz. (barrel) | 8.5 oz. (bolt)


A Mil-spec dust cover will not be compatible with the JP .22 LR bolt assembly. The optional dust cover is intended to serve this purpose.

Barrel Finish

This barrel is available with the following finish options:

Machine Finish: Barrel is in its unpolished, "as-machined" state and will show light turning marks and slight imperfections.

Light Polish: Barrel receives a light "brushed" finish. This leaves the surface uniform and removes most machine marks and blemishes.

High-Grade Polish: Barrel is polished to a reflective finish on the same level as our complete rifles and barrel kits.

Black Teflon™: Barrel receives a uniform low-shine black coating.

Tactical Finish: Barrel is blasted to a non-reflective, matte gray finish.

Barrel Finishes

Heat Sink

This barrel takes our long .750 OD Thermal Dissipator (JPTD750L).

Note that the Orange Fade Thermal Dissipator is made to order and will add two weeks to delivery.

Read more about the JP Thermal Dissipator here.


Product Instructions


Dust Cover:

Thermal Dissipator:

Price: $525.00