2023年10月7日 · RCM MP5-E Bolt Head is a drop in Upgrade/Replacement for all existing MP5 style pistols and rifles. It has proven to increase function and reliability in semi & full auto weapons. Rigorous testing has proven results far superior to …

2017年9月15日 · With the MAD bolt, my Omega MP5 clone has now reached Glock-like reliability. Last year, I was on the verge of returning it to Omega for a refund due to constant failure to eject issues, but, after I replaced the bolt with the MAD bolt, the failure to eject issues disappeared, with the exception of one brand of 9mm NATO +P ammo, Winchester.

2016年10月23日 · MP5/10 was a new receiver and barrel, bolt group and stock components, bolt catch, cocking lever support, ejector and trigger housing, and most importantly three iterations of a reliable magazine, THE most difficult and expense part of any new firearm, AND many thousands of expensive 10mm rounds for testing.

2008年1月11日 · The big reason one that fires from open bolt is less accurate is that you have that large mass (the bolt) flying forward which pulls the alignment off of where you have it aimed. But that really only affect the first shot when on f/a mode. Most handguns are pure blowback, some are not. Like the P7.

2011年11月26日 · The wider plate-style roller holder was designed for and first used in the "F" (French) model MP5 bolt head. It WAS NOT used in the original "Action 3" bolt head which came years before the F model. Both have the Action 3 bolt face scallops but only the F version has the larger (wider) plate roller holder.

2024年11月30日 · 4. MP5-E Bolt with -2 Rollers + RCM 100 Deg LP = back to 0.019" (0.48 mm) We already know what the measurement was with both the original and RCM LP and MP5-E bolt with 8 mm rollers, 0.020" (0.50 mm). I even tried original MKE rollers, with the same result 0.020" (0.50 mm). So, unless I am missing something, the MP5-E bolt is the culprit.

2016年9月2日 · The 9mm bolt head, the topic of the thread, does not have the lever. Good idea for the rifle calibers though. I don't use anything aside from fingers to reassemble my rifle caliber bolt groups. As said above, knowing the tricks makes all the difference in the world.

2009年8月21日 · What are the differences between the original/stock bolts for the MP5 (HK94) and MP5K (SP89) and the new "F" bolt? Is it worth spending $300+ for the new bolt? Also, its my understanding that the bolts are interchangeable from an MP5 and MP5 k, unlike the carriers which are model specific?

2013年5月12日 · A lot of people use the Action 3 bolt head for the SD. I think at the time the Action 3 bolt head came out, there was some explanation how this was an improvement when shooting SDs (which had nothing to do with the Action 3 ammo). I have long forgotten the specifics, and the F bolt head may be just as good or better for all I know.

2017年7月3日 · I had received the bolt head from Atlantic Firearms the other week and installed it last night. It went on nice and smooth with no issue in replacing the original bolt head. At the range, I started with 30 rounds from an HK curved MP5 mag in semi automatic. All 30 rounds went through the gun with no issues.