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The Range
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HK SP5K COMING SOON
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<blockquote data-quote="rocketman" data-source="post: 2895459" data-attributes="member: 24956"><p>For the ones asking why the HK over the AR 9mm(or other pure blowback 9mms)...I have a sbr built from a colt smg 9mm parts kit with all the best colt parts and all colt mags. Reliability is not so great. Sound suppression is ok. Lots of action noise and chamber bark. Recoil is too much for a 9mm because of excessive bolt velocity smacking the buffer. Cases are bulged due to pure blowback and light bolt(my 7" upper works better though). These problems apply to other 9mm carbines as well.</p><p></p><p>As for the mp5's...The hk mp5 style sbr that i built and welded from clone and hk parts has NEVER manfunctioned in any way in the 1000's of subsonic reloads ive put through it(knock on wood). Sound suppression is excellent with the delayed unlocking(no chamber bark), bolt velocity is slow and recoil is soft. Cases come out in great shape. it was worth the $1400 i spend to build it!</p><p></p><p>And for the 300 blackout comparison...Since sound is the main reason for this kind of setup i prefer the quieter 9mm.</p></blockquote><p></p>
[QUOTE="rocketman, post: 2895459, member: 24956"] For the ones asking why the HK over the AR 9mm(or other pure blowback 9mms)...I have a sbr built from a colt smg 9mm parts kit with all the best colt parts and all colt mags. Reliability is not so great. Sound suppression is ok. Lots of action noise and chamber bark. Recoil is too much for a 9mm because of excessive bolt velocity smacking the buffer. Cases are bulged due to pure blowback and light bolt(my 7" upper works better though). These problems apply to other 9mm carbines as well. As for the mp5's...The hk mp5 style sbr that i built and welded from clone and hk parts has NEVER manfunctioned in any way in the 1000's of subsonic reloads ive put through it(knock on wood). Sound suppression is excellent with the delayed unlocking(no chamber bark), bolt velocity is slow and recoil is soft. Cases come out in great shape. it was worth the $1400 i spend to build it! And for the 300 blackout comparison...Since sound is the main reason for this kind of setup i prefer the quieter 9mm. [/QUOTE]
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