The lack of a chrome lined barrel on the SA guns is an added bonus too. MackUSMC [Member] 2/4/2009 10:00:10 PM Do it absolutley! it is a very fair trade. The poly may not have the finnish of the springfields but the parts on the rifle, such as the reciever, and op-rod are forged, not investment cast. the poly barrels are chrome lined and are equal in quality to GI M-14 Scope Mounts barrels. Parts for the M-14 Scope Mounts will interchange with the poly M-14 Scope Mountss with the exception of the gas cylinder lock. the first batch of poly/norinco M-14 Scope Mountss bolts were hit and miss on the case hardening, but you can get replacements or swap the poly bot for a GI. the only caveat about that is have it done properly and make sure the head space is acceptable. The rear sight truss, base and knobs were sometimes soft, and not as durable as the GI or springfield inc. parts.