GEN 2 AR-15 Silent Captured Spring Builder with Alternative Spring Pack
Standard Version
Includes SCS unit, five alternative weight springs and spacer to allow for installation in both carbine- and rifle-length buffer tubes.
Weight: 5.3 oz. (final SCS unit)
Compatibility:
Buffering/Reciprocating Mass: 2.9 oz. (Ideal for replacing a standard buffer of the same weight)
| Model |
Caliber |
Best For |
Not Recommended For |
JPSCS2-15
AR-15 |
| .223/5.56 or smaller
| .300 BLK (Supersonic or suppressed w/ subsonic ammo)
| 6.5 Grendel or larger (w/ low mass bolt carrier and adjustable gas block) |
| Duty/competition rifles with standard or low mass bolt carriers
| 14.5 - 20" barrels
| Semi-Auto |
| SBRs
| High back-pressure suppressor use
| Piston systems
| Select-fire |
JPSCS2-15H2 /
JPSCS2-15H3 *
AR-15 |
| .223/5.56 or smaller
| .300 BLK (Supersonic ammo only)
| 6.5 Grendel or larger (w/ standard weight bolt carrier) |
| SBRs
| High back-pressure suppressor use
| Piston systems
| Select-fire |
| Light-weight operating systems/low mass bolt carriers |
JPSCS2-10
AR-10 |
All |
| Light-weight operating systems/low mass bolt carriers and adjustable gas block |
| SBRs
| High back-pressure suppressor use
| Piston systems
| Select-fire |
JPSCS2-10H2 /
JPSCS2-10H3 *
AR-10 |
All |
| SBRs
| High back-pressure suppressor use
| Piston systems
| Select-fire |
| Light-weight operating systems/low mass bolt carriers |
* The use case for H2 and H3 models is virtually the same. In almost all cases, they can be used interchangeably, and the choice between the two comes down to a preference in weight and cycling feel. The H2 is will produce a faster, snappier cycle compared to the H3, which will have a slower, heavier cycle. Only in extreme cases such as a severely over-gassed rifle without an adjustable gas block would the H3 be a functional recommendation over the H2.
See our FAQ section if you have more compatibility questions.
SCS Buffer Retainer Pin
Because the insertion and removal of the Silent Captured Spring is very difficult with a standard buffer retainer pin, we recommend removing it when installing your SCS. This leaves the SCS "free-floating" in the buffer tube. While this isn't a problem when the receivers are closed, some shooters find it objectionable. In this case, we have a custom Silent Captured Spring Buffer Retainer Pin and Spring available to retain the SCS without the snagging caused by the Mil-spec design.
Read more about this part here.
Media:
Patents: 8,800,424