jpw43 Posted February 1, 2006 Report Share Posted February 1, 2006 Does anyone here have the actual specs for a 21 actuator? I'm thinking about hasving one made, and don't know if there are any "blueprints" around. Thanks in advance! Link to comment Share on other sites More sharing options...
red cap Posted February 1, 2006 Report Share Posted February 1, 2006 The cheapest and easiest way to do it is to cut the bottom "weight" off a military 1928A1 actuator. I did this some years back with a hacksaw (yes, I am completely crazy) and cleaned it up with a file; took about a half hour of sweat and blisters, but, when paired with a 1921 buffer and spring, it worked just fine. You can buy a repo from Doug Richardson for about $400? more?, but you can't go just down to your local machine shop and have them turn one out of the right metal with the right heat treating. Remember, you MUST use a 1921 buffer and spring to avoid having too much velocity to the backward movement and maybe eventually banging out the end of the receiver. Have fun! Link to comment Share on other sites More sharing options...
giantpanda4 Posted February 1, 2006 Report Share Posted February 1, 2006 PK has a hybrid 21 / 28 actuator and spring kit available. It works GREAT! I'll let him fill in the details.... http://www.machinegunbooks.com/forums/invboard1_1_2/upload/html/emoticons/cool.gif but if you do a search you may find old posts about this topic. Link to comment Share on other sites More sharing options...
jpw43 Posted February 4, 2006 Author Report Share Posted February 4, 2006 Well, I'm in China at the moment and my wife's uncle has a machine shop here. I was going to see if he could produce them at a reasonable cost. Link to comment Share on other sites More sharing options...
Merry Ploughboy Posted February 4, 2006 Report Share Posted February 4, 2006 jpw43, Newly made '21 actuators are regularly offered for sale on Subguns for $375. Link to comment Share on other sites More sharing options...
NotDeaf Posted February 6, 2006 Report Share Posted February 6, 2006 JPW43, Here’s a link to a person selling the Colt Thompson Actuators on GunBroker.com, it says “new manufacture†maybe he made them? You could always drop him an e-email and see if he has the specs you’re looking for ….. http://www.gunbroker.com/Auction/ViewItem....p?Item=43550874 Thanks Randy aka NotDeaf Link to comment Share on other sites More sharing options...
Arthur Fliegenheimer Posted February 6, 2006 Report Share Posted February 6, 2006 QUOTE (PhilOhio @ Feb 6 2006, 01:18 PM) QUOTE (Merry Ploughboy @ Feb 4 2006, 02:37 PM) jpw43, Newly made '21 actuators are regularly offered for sale on Subguns for $375. ...or in China at $3.75...but better quality. http://www.machinegunbooks.com/forums/invboard1_1_2/upload/html/emoticons/wink.gif Judging by the Chi Com's version of the TSMG, not to mention current day production tools, clothing, sneakers, etc, I'm not sure about that superior quality label. Link to comment Share on other sites More sharing options...
jpw43 Posted February 9, 2006 Author Report Share Posted February 9, 2006 I went by the shop yesterday. They can produce the part, and the metal is good. Maybe the earlier Chinese Thompsons were produced in mass quantity, so the quality was bad. Don't really know too much about them. Link to comment Share on other sites More sharing options...
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