Description
This spring kit will significantly reduce the pull needed to cock the gun. Kit uses a recoil buffer to compensate for spring pressure reduction.
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Compatible Gun Models: Thompson 1927/28 A1, M1A1, M1 (can be used with the Aluminum frames as well) TA5 (1927 A-1 Deluxe Pistol)
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Will work with Blank Ammo (using a blank barrel) and Live Ammo.
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Kit includes: 1 Hammer, 1 Firing Pin Spring, 2-Recoil Springs, 1 Urethane Recoil Buffer
Watch our 2 minute installation video: Click here for Video. Click here for Install Instructions.
To order a replacement Urethane buffer Click Here
Thomas Myers (verified owner) –
Just picked up my M1 Thompson SBR from my dealer after getting my ATF Clearance. Once I got it home, it. was near impossible to pull the bolt back. Springs were too strong – and I just finished installing this “Reduced Pull Spring Kit”, and it’s like a totally different gun – the way it should work!!! Thank you, Howell Arms!!!