I recently got an 1187P and really like it. It runs 100%. I had my gunsmith put a Vang big head safety & ss follower, a SG side saddle & DMW tact bolt handle on it. I think I'll swap out the factory ext tube for a Scattergun since I want a beefier one than the factory.
I was wondering if the following factory parts were stainless steel or carbon; the recoil spring system, the barrel seal, gas piston & barrel seal.