* Defense Distributed AR-15 Lower Receiver v5
* FOSSCAD AR-15 Lower Receiver v5.1
– An iteration on the original v5 lower by FOSSCAD members.
– Two versions are included – the GS (glue/screw) version, meant to be printed in ABS, and the NS (nylon screw) version, meant to be printed in nylon.
* Shadowfall Vanguard AR-15 Lower Receiver v2.1
-The final FOSSCAD iteration in the Vanguard series, which was originally derived from the v5
* Warfairy Charon v4
-A popular and highly unique lower from Warfairy, one of the most noted at the time of its release
* Hoffman Tactical AR-15 Super Lower v3.1
– This was not derived from the DDv5 lower and is instead a separate development line.