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ap27 · September 20th, 2011, 22:11

From what I've read, the bolt catch issue on propane was only for the non system-7 MP9.

KSC originally had a TMP that couldn't handle propane. It would damage the internals.
They then released a non system-7 MP9 that had reinforced parts that could technically handle propane. This one had the bolt catch issue with propane. It used the same magazines as the old TMP.
Next KWA launched the NS2 KMP9, which I believe is built for propane from the ground up. KSC then updated their B&T MP9 with the new NS2 system, which they call System-7. Obviously it shares magazines with the KWA KMP9, but cannot use the old TMP/nonsys7 MP9 mags.

I have a KSC Sys7 MP9 in tan. Haven't had any bolt catch problems so far. Runs great on propane. The accurate trades was the only reason I didn't go for the KWA KMP9

September 20th, 2011, 22:11	#2
ap27 Trader rating Join Date: Jun 2010 Location: Milton, ON	From what I've read, the bolt catch issue on propane was only for the non system-7 MP9. KSC originally had a TMP that couldn't handle propane. It would damage the internals. They then released a non system-7 MP9 that had reinforced parts that could technically handle propane. This one had the bolt catch issue with propane. It used the same magazines as the old TMP. Next KWA launched the NS2 KMP9, which I believe is built for propane from the ground up. KSC then updated their B&T MP9 with the new NS2 system, which they call System-7. Obviously it shares magazines with the KWA KMP9, but cannot use the old TMP/nonsys7 MP9 mags. I have a KSC Sys7 MP9 in tan. Haven't had any bolt catch problems so far. Runs great on propane. The accurate trades was the only reason I didn't go for the KWA KMP9 __________________ H&K G36c (KWA) / Glock 18c (TM) / Kimber LAPD SWAT Custom (TM) / Mossberg M500 (ACM) Last edited by ap27; September 20th, 2011 at 22:14..