For sale new:
OR3GUN's Competition Combo for the Mossberg JM 940 PRO
From the Manufacturer:
"While several internal upgrades were made with the introduction of the 940, one of the most critical was left on the table. Hidden inside your return spring tube is the same design and (exact spring) that caused issues with the 930 at higher round counts. (Since this is the same issue, see our 930 CSP page for complete details.) As the 930 has the same recoil system issues as the 930, including the sharp spring burr that eats away at the plunger, we have produced a version of our captured tail plunger specific to the 940. The familiar, sharp spring burr was found to be present on ALL 4 of the 940 JM PRO series guns we got in for prototyping and evaluation. They were sourced from different distributors and were hundreds of serial numbers apart. There have also been numerous reports of issues with 1200 FPS loads cycling reliably after the round count builds on OEM recoil system parts. After our own extensive testing, evaluation and prototyping we put our ASR/CSP solution for the 940 into production. (Please note, the 940 ASR/CSP components are NOT the same dimensions as the 930 versions. They are NOT compatible with each other!)."
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