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3D printable magazine for the Thompson carbine/SMG by OldGreyBeast
This magazine is suitable for either the modern semi auto carbines by Auto Ordnance or original GI SMGs/parts kits.
Swap the mag catch out (CIV for civilian/semi, GI for SMG/parts kit) to use this mag in either variety, so you only have to print one body if you have multiple Thompsons. The mag catch fitment is tight by design and may require some sanding to fit smoothly into your mag body. The printed mag catch pin works, but 2mm (1/16") aluminum round stock is better. Snip it to length (8mm) with wire cutters.
HARDWARE
10 round mag spring - eBay - GHOST Magazine Spring Plus 13% Large for Glock 17 17L 22 31 34 35 37 (cut off about 4 coils)
20 round mag spring - eBay - GHOST Magazine Spring Plus 13% Large for Glock 17 17L 22 31 34 35 37 (no need to cut)
30 round mag spring - wherever - Wolff +5% 33rnd Glock mag spring
Mag catch pin (optional, can print) - 2mm (1/16") aluminum round stock (uxcell on Amazon sells this for cheap)
PRINT SETTINGS
Filament: Polymaker PLA Pro (any decent PLA plus/pro should work)
Print Orientations:
CIV Mag Catch - Vertical with support
GI Mag Catch - Vertical with support
Floorplate lock - Flat side down, no support
Floorplate - Flat side down with support
Mag Body V2 (all) - Vertical, feed lips up with support
Mag Catch Pin - Horizontal, no support needed
Mag Follower - Flat side down with support
LBRY Tags: 3d printing; guns; thompson; magazine
This magazine is suitable for either the modern semi auto carbines by Auto Ordnance or original GI SMGs/parts kits.
Swap the mag catch out (CIV for civilian/semi, GI for SMG/parts kit) to use this mag in either variety, so you only have to print one body if you have multiple Thompsons. The mag catch fitment is tight by design and may require some sanding to fit smoothly into your mag body. The printed mag catch pin works, but 2mm (1/16") aluminum round stock is better. Snip it to length (8mm) with wire cutters.
HARDWARE
10 round mag spring - eBay - GHOST Magazine Spring Plus 13% Large for Glock 17 17L 22 31 34 35 37 (cut off about 4 coils)
20 round mag spring - eBay - GHOST Magazine Spring Plus 13% Large for Glock 17 17L 22 31 34 35 37 (no need to cut)
30 round mag spring - wherever - Wolff +5% 33rnd Glock mag spring
Mag catch pin (optional, can print) - 2mm (1/16") aluminum round stock (uxcell on Amazon sells this for cheap)
PRINT SETTINGS
Filament: Polymaker PLA Pro (any decent PLA plus/pro should work)
Print Orientations:
CIV Mag Catch - Vertical with support
GI Mag Catch - Vertical with support
Floorplate lock - Flat side down, no support
Floorplate - Flat side down with support
Mag Body V2 (all) - Vertical, feed lips up with support
Mag Catch Pin - Horizontal, no support needed
Mag Follower - Flat side down with support
LBRY Tags: 3d printing; guns; thompson; magazine