They suck do not buy - Meprolight Sights for H&K Rifle Models

I carried an HK MP5 when I was on SWAT from 96 thru 2004. No tritium sights for this weapon back then. However during CQB you need fast sight acquisition and these sights do not provide that. If I didn't know my PTR91 was a PTR91 I would swear it was an HK. Its like reuniting with my old mistress by the way she feels and sounds. Even with the close eye relief of the rear sights I have to search for them because of the lack of brightness. I consider these sights to be an insult and slap in the face to such a prestigious weapon. Disappointing... not very bright.About half as bright as the truglo I recently bought. I rated this product with 1 star because there is no choice for no star... DO NOT BUY!!!