Originally Posted by Mwinter
3 out of the 4 of the Deltas I ran (older production models) got the following:
solid stainless steel 1-piece guide rod
22lb recoil spring
oversized rear plate fitted
Brown firing pin/hammer/sear fitted
All 4 were run with Metalform 9-shot steel-follower mags with extended rubber baseplate (Metalform made some of Colt's mags as I understand it). Some of the had other Brown parts (beavertail, ext. safety, magwell, etc.) and 1 had Trijicon standard nightsights installed (never found the 'low/snagfree' 1911 sights to be necessary).
In my experience, your pistol will require tweaking/smithing/parts replacement to run 100%. Only 1 factory 1911 ever ran properly right out of the box for me (SA TRP), and the 10mm has it's own quirks. The Colt dual-spring and guide rod are the SUCK in my experience.
If it doesn't feed, you can give it Hornady 200gr XTP or CorBon PowRBall 'til it's fixed (both have nice roundish bullet profiles).
Colt has 23# factory duel sping and it does work.....but I like FL guide rods and one is on the way as are 23#, 24#, & 26# Wolff Springs. I have new FP Plunger & spring ordered, replacement FP has arrived, but it looks too short and I have already tossed old bent FP and don't ask how I managed that trick. I may order one from Colt this time because this one from Midway came with corrosion spots on the pin and looks short to me, but have no way to tell w/o another to measure. So I'm debating on should I step up and order a new one from Colt, then start later on lower end