JP Enterprises SCS-10 Builder Kit With Spring Pack
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Jp Enterpirses heavy captured spring kit
Installed it on my Armalite Ar-10t w/ 24" barrel and so far so good. The kit comes with 3 varying spring tensions but the actual weight or resistance of the springs are not listed. I ended up using the heaviest, stiffest spring. I noticed that the bolt sometimes is slow to strip the next round off the mag, and failed to feed on the 2nd round. This happened only once after I initially installed the capture spring. Ran about 50 rounds after that with not issues.
Pros:
- changing of springs
Cons:
- Pricey
Best Used for:
- heavy recoling rifles
Would recommend: Yes