M1 & M1A1 Thompson Welding Jig Set. These are full-length jigs and ensure precise alignment of all receiver pieces during the welding process. Each set includes all the essential hardware: one eye-bolt, two washers, two wing nuts, and an 18-inch threaded rod. By inserting the rod through the entire jig and receiver and securing it with the wing nuts, the receiver pieces will be firmly clamped together. With this jig, you can effortlessly achieve the correct spacing of the receiver components. Just remove any slag from your pieces, position them on the jig, and start welding!
We offer a similar jig for the 1921/1928 Thompson models too. Check them out here.
Edward Fitzgibbon (verified owner) –
I just bought one of these jigs recently this was my second jig I’ve bought for a Thompson those small cheap ones are nothing compared to this one it’s definitely worth the extra money especially the mag well ejection port area that saves so much time and the tolerances are spot on I highly recommend this jig to anyone trying to do a post sample or a semi auto Thompson
Robert Frady (verified owner) –
Arthur Thorne (verified owner) –
Superb transaction, would buy from again.
Ron Z. (verified owner) –
Very good product
Marcus K. (verified owner) –
Well made, will save time, fast shipping. Daddy is happy.
Joshua P. (verified owner) –
The quality of this jig set is top notch, as has been every jig I’ve purchased from Flint HIll. Shipment was very fast. Keep up the good work
Christopher Erardi (verified owner) –
Excellent jig !!! precise fit and easy to assemble. I would highly recommend purchasing this jig. If you are reconstructing a receiver.