40_mm

Place for owners/users of 40mm launchers and other legal NFA DDs to discuss ammo, launchers, loading tips/tricks, reloading resources/components, legal minutia, and any other stuff that isn’t easily found with a quick google search.

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Ok who bought all the other 40mm’s from Mile high?

Posted 5th May 2026u/37MMDTdotCOM

CTS bean bag dissection

Posted 6th May 2026u/Ok-Calendar9243

Children are much better suited to crew served weapons. The semi stationary characteristic of a mortar or heavy machinegun relies less on the child's physical strength and stamina, and also builds teamwork

Posted 29th Apr 2026u/ChevTecGroup

JUST HERE TO SAY THANKS !!

Posted 28th Apr 2026u/Raberasud

Who is trying to take home a trophy? Big Bore Blast is this Saturday!

Posted 22nd Apr 2026u/ChevTecGroup

What are the regulations on procuring M550 style fuses? Indiamart/Alibaba are crazy lmao

Posted 20th Apr 2026u/MelsEpicWheelTime

.44spl launch blank 40mm cases

Posted 20th Apr 2026u/Ok-Calendar9243

Arms Research Technology Cases

Posted 15th Apr 2026u/mtlcafan79

Posted 15th Apr 2026u/MediumDeep7174

Prototype Grenade Sight

Posted 14th Apr 2026u/Teenage-Dirt-Bag

Tested 14 of my short ready to load projectiles today. All were successful!

Posted 13th Apr 2026u/37MMDTdotCOM

3D Printed DIY M18A1 Claymore Mine Project Now Released

Posted 12th Apr 2026u/Ok-Calendar9243

(help) M203 Grip

Posted 10th Apr 2026u/eguipegui

Is this acceptable alignment

Posted 10th Apr 2026u/djburn831

40mm Triple Nipple Round

Posted 9th Apr 2026u/Ok-Project6139

"You got into big bore stuff?! How deep did you get?"

Posted 7th Apr 2026u/DepartmentWeird5733

Yet another optic mount.

Posted 6th Apr 2026u/Teenage-Dirt-Bag

Happy Easter! Anyone else do an egg hunt this morning?

Posted 5th Apr 2026u/tax_stamp_collector

Posted 4th Apr 2026u/Remote_Teach1164

Goods from 37mmdt.com

Posted 3rd Apr 2026u/Blooper1actual

DIY Replacement CTS/Penn arms 37/40mm barrel latch

Posted 29th Mar 2026u/Ok-Calendar9243

Quadrant Sight Rail Upgrade

Posted 28th Mar 2026u/Teenage-Dirt-Bag

Green chalk 5lbs does about 65 of my large cones.

Posted 26th Mar 2026u/37MMDTdotCOM

Single 35mm AP less lethal rounds ready for testing!

Posted 24th Mar 2026u/37MMDTdotCOM

Another batch ready to prep - DT chalk ready to load projectiles

Posted 22nd Mar 2026u/37MMDTdotCOM

First round out of M32

Posted 21st Mar 2026u/Blooper1actual

40mm Marker Projectiles

Posted 21st Mar 2026u/retep4891

Floating photo of M32

Posted 20th Mar 2026u/Blooper1actual

Big Bore Blast shirts are on pre-sale

Posted 18th Mar 2026u/ChevTecGroup

Posted 15th Mar 2026u/Blooper1actual

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