1928 Thompson Welding Jig Set


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1921 & 1928 Thompson Welding Jig Set. These full-length jigs ensure precise alignment of all receiver pieces during the welding process. Each set includes all the essential hardware: one main jig with brass insert, magazine well jig, two receiver channel inserts, wing nut, washer, rear screw, threaded rod, and hex key. 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 M1/M1A1 Thompson models too. Check them out here.