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Sparrow Dynamics
Protecting Freedoms Through Innovative Arms Accessories
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Shingle Springs, United States
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Ruger 10/22 Magazine Bottom
This part fits to your ruger 10/22 magazines. You just have to screw 4 M3-screws in. With this bottom you get a better handling of your magazines....
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U.S. Gov M16A1 Bolt Assembly PN.8448509
This assembly upload will replace previously uploaded single part files. Also be aware that the springs are modeled as you would make / purchase th...
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1389
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AR15 CMMG 22 Conversion Kit Buffer Tube Spacer
I made this for my CMMG 22 AR Conversion Kit in order to keep constant pressure on the bolt to prevent the 5.56 casing part of the bolt from unseat...
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Ar15 Barrel Extension
Ar15 Barrel Extension education only :)
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Paddle for Bencher Keyer
I just drew this up to make paddles from Linen Micarta for my Bencher morse keyer (bought on MFJ's site), to replace the acrylic ones.
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Rear Take-down Pin
Rear Take-down pin for the AR15/M4/M16 platform
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Front Take-down Pin Corrected
Just realized that I modeled my original front take-down pin incorrectly... Here is the corrected model...
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10 Round 5.56 magazine
Here are some stl's for anyone who would want to print their own 10 round ar-15 magazines. They worked for me but I adjusted some dimensions on th...
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M16 Auto Selector
M16/ M4 Safe-Semi-Auto Safety Selector.
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Clamshell AR15
High strength clamshell lower. Tested with 50 and 450 cal.
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M16 & M4 Fire Control Group Test Jig
NOTE: fire control group available via the link: https://grabcad.com/library/u-s-milspec-m4-m16-fire-control-group-1 This part is a simple, small,...
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Scalarworks LEAP Micro T2 Optic Mount
1.93" in height.
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AR15 Magwell Side Grip with Thumb Rest
A magwell grip with a thumb rest. I find this to be the most ergo way to shoot, although YMMV. Patent pending. Borrowed YHWOLF's model here for re...
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+25_Pmag_extension
Since every politician wants to ban 30rnd magazines. I made a +25rnd extension for Magpul magazines. The extension allows you to turn 10rnd magazin...
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