G'day there Sig !
As a (former) competitive shooter (Para 1911 .40cal),
I had spare barrel bushes, recoil springs, sears, firing pins,
extractor etc etc...
Not really in case of something going wrong at a comp
just really handy to have if something went wrong anytime.
I couldn't wait to strip my Para down and find out how to clean,
polish, improve its function from the first day I got it !
Learnt how to do trigger jobs, feed ramps etc all quickly and easily too.
Still got the book, The Colt .45 Automatic A Shop Manuel - Jerry Kuhnhausen
Damn I miss that gun...sniff...sob... howwwwwl
