AR-15 Chamber Flag for 5.56 .223 .300
thingiverse
I took the SAAMI specs and designed a chamber flag that will accurately index in the same place regardless if you use .223/5.56 or .300 Blackout. Because it indexes on the datum line of each cartridge it will always stick out the same amount. Modeled a hole for use with keyring flags and a groove for manual retraction. WARNING: Do not print with standard resins or this will shatter if you send the bolt home! If you want to print using resin, use a tough semi-flexible type like Siraya Tech Blu. PLA should be fine for this.
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