I'm slowly "gathering" parts for my trunk pistol build... Most recent was an "H2" buffer and HD spring off Debay. Think I paid $16? Sounds too good to be true, and it was...
But not all is lost!
Out of curiousity, I popped apart the "H2" buffer and determined it contained 3 steel weights, "spacers" and the housing was probably made of steel, making the entire buffer 4.45oz (127g), slightly down from their claimed 4.5oz but NBD. The housing was 68g, each weight was 17g and the bumper was 4g.
To put that in perspective, a PSA-branded "regular" buffer was 2.95oz (84g). The housing was 23g, each weight was 18-19g, and the bumper 5g.
An even cheaper buffer I received with a pistol tube was only 2.85oz (83g) and did not have the roll pin hole drilled all the way through so I did not bother to disassemble it...
The spring that came with the "H2" setup WAS heavier duty than the PSA spring. The best I could figure with my trigger pull gauge was the spring that came with the "H2" took 5lbs to compress 2" while the PSA spring took 3lbs. The "H2" spring was also 1/2" longer than the PSA.
I'm going to try the "H2" and HD spring in my middy in place of the PSA and report back with results the next range session. My issue with that gun was that it was denting cases near the shoulder of the case--maybe kicking back too hard?