Dusty from United States, ID Public Profile

Setups may vary, but mine is a typical AR9 PCC. Specs convieniently missing or wrong. Consider TOTAL price before you buy. The REAL numbers:

SCSS minus shim; 316g
Moving mass, includes spring but not rod, stop or screws; 209g
Stainless slug ea; 21g (.74oz) -incorrect spec
Tungsten slug ea; 46g -not given

Original moving buffer mass, H2 buffer + spring; 209g
BCG slug wt being removed and replaced by SCSS; 73g
Total moving mass target of original, bolt slug w/out bolt body which isn't changing + buffer; 282g

This unit was recommended by JP TS to add mass back from removing bolt slug to function. As is, comes up 12g (.42oz) short of original moving mass.

Spring force is less than original. Added mass would be needed to compensate for lighter spring in addition to the lost 12g.

Will need to swap 1-3 of the stainless slugs for tungsten. That's $40 to $120 in addition to the purchase price; $40 minimum to recover the missing 12g resulting in a net gain of 25g which may not be enough to compensate for the spring, which may also need to be replaced.

If their marketing information was correct people would understand this compares even worse to other products such as Armaspec Stealth Recoil Spring, only $80, which reportedly functions the same or superior in some unspecified ways. I can't speak to that from experience but given the cost difference I suggest you take a hard look at other products. The JP system does allow weight and springs to be adjusted, as do others, but r