DS1913 v2.0 Receiver Details
Attention all 3D gun enthusiasts!
If you’re looking for an AR-15 lower that’s optimized for an Atchission/CMMG .22 LR conversion kit, then you’ll definitely want to check out the DS1913. This impressive lower is packed with features that are sure to impress even the most discerning shooter.
One of the standout features of the DS1913 .22 LR is the 1913 rail on the rear, which allows for easy mounting of compact braces or stocks. This makes it a great choice for anyone who wants to customize their AR-15 for maximum comfort and accuracy.
Another great feature of the DS1913 is the bolt-catch delete, which provides added reinforcement and helps to improve overall reliability. This is a great feature for anyone who wants to ensure their AR-15 is always ready to go when needed.
In addition to these impressive features, the DS1913 also includes a number of quality-of-life updates that are sure to make your shooting experience even better.
For example, the takedown spring geometry has been optimized for maximum performance and reliability, while the off-set takedown stand-off helps to increase print life and ensure that your AR-15 stays in top condition for years to come.
Warning: Do NOT under any circumstance use this design with ANY upper receiver that requires a buffer tube. Catastrophic, and FATAL, damage WILL occur.
DS1913 v2 AR15 22lr in the Wild
Upgraded DS1913.2 test firing!— Vinh Nguyen 凯文荣阮 (@nguyenkvvn) March 31, 2023
More of a formality tbh as this shares a common baseline with the PRM-9 and Perun lower, which both are more intense than .22.
Curiously, Winchester .22LR Western cycles this short barrel, but it fouls so fast. pic.twitter.com/kFxYZUCMe2
DS1913 v2.0 AR15 Tech Specs
Vinh made a large number of updates for the 2.0 version of the DS1913.2.
These include reintroducing the takedown detent system, eliminating a “friction fit” of the receivers, takedown standoffs (thanks to Hoffman for this idea), and tweaking magazine fitment.
It also rebases the foundation away from the Disruptive Solutions model (self-described as untested) to the AR-15 CAD and Technical Data package available from The Gatalog.
While this model retains the DS1913 name, v2.0 is considered a successor to the DS1913 v1.2, rather than an update.
Required Parts for the DS1913 v2.0 AR15
AR-15 Upper Receiver Assembly
You will need one of the following for the DS1913 v2.0:
- Dedicated .22 LR bolt and barrel
- CMMG .22 LR conversion
- Atchison-based .22 LR conversion
AR-15 Lower Parts
You will need a complete AR-15 Lower Parts Kit, including:
- Trigger Bow
- Trigger Bow Spring
- Hammer Spring
- Fire Selector
- Fire Selector Detent
- Fire Selector Detent Spring
- 2x Takedown Detent
- 2x Takedown Detent Spring
- Magazine Release
- Magazine Release Button
- Magazine Release Spring
- The AR-15-compatible grip of your choosing
- 2x M4 Steel Hex Nut (MCC 90592A090)
- 2x M4x30 Socket Head Screw (MCC 91290A176)
- OR 2x M4x22 Socket Head Screw (MCC 91290A168)
- CMMG AR-15 .22 LR Conversion magazines
The DS1913 .22 LR requires basic gunsmithing tools and a 3D printing setup, i.e. and Ender 3.
Using a dialed-in Ender 3 with widely available PLA+ filament will get the job done in most cases.
- Lower Receiver
- Gunsmithing Punch Set
- Metric Drill Bit Set
- 2.5mm Drill Bit
- 3.5mm Drill Bit
- 4.0mm Drill Bit
- 6.5mm Drill Bit
- Large Stick File
- Narrow, but not needle nose, pliers
The following tools may help, but are not required:
- Flathead screwdriver
Suggested 3D Print DS1913 v2.0 AR15 22lr Settings
The slicer settings for the 3D-printed DS1913 v2.0 AR15 22lr are as follows:
Nozzle Size: 0.4mm
- Height: 0.16mm
- Initial Height: 0.16mm
Infill Density: 100%
Supports: Tree Supports
Bed Adhesion: Brim
- PLA+ (eSun, Polymerk or simular)
- Rebased the model away from Disruptive Solutions AR-15 to the Gatalog release of the AR-15 Technical Data Package
- Restored takedown spring detent functionality for front and rear
- Introduced takedown standoffs
- Optimized grip screw geometry
- Refreshed files for the final release.
- Revised right-hand selector clearance
- Modified thin wall in magazine release button extrusion
- Initial release
Overall, the DS1913 is an excellent choice for anyone who wants a high-quality AR-15 lower that’s optimized for an Atchission/CMMG .22 LR conversion kit.
With its impressive features and quality construction, this lower is sure to provide reliable performance and maximum customization options for years to come.
3D Print your 22lr battle rifle today!
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