Yep. Then they made the maximus which had a little better valve and longer barrel with steel breech. Also had the fortitude which was regulated and multi shot breech based on the Mrod mag and bolt, but sized for the smaller tune. Those didn't fare well on the market and had a tiny plenum. I gutted my 177 fortitude and it put in a maximus valve, and it went from 15 fpe to 28 fpe.Didn't the Disco already have the steel breech and was more powerful ?
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