I can't figure out how the end result will be different.  How will each one looks when finished building with a kit?  I can only buy one.  Thanks in advance for your help.

Ok,

The quick lowdown.

Type I's(Metric/Euro) are the original of course. Metric mag notched, and have a uninterupted scallop/notch that runs along the lower edge of the upper receiver.

Type II's(Metric/Euro)have a different scallop/notch profile that left a lil more metal where some receivers were cracking under severe punishment from sustained full auto firing. Offers no real benefit for semi auto guns.

L1A1's(Commonwealth/Inch) look most like type I's but, are cut for Commonwealth/Inch patter magazines, have sand cuts internally that help spit out crud(when used with a sand cut bolt carrier), and have a minor change to accomodate the std folding cocking handle.

If you have a commonwealth kit, I'd go with the L1A1 since DSA is now making those to keep it closest to original config.  If you have a metric( IMBEL, DSA, Coonan, etc.)kit, I'd stick with a Type I but, that's a personal preference.

FYI-DSA's type I's can be had without the carry handle notch for those who think carry handles are stupid(might also add a bit more rigidity to the receiver)

HTH

Blitz

Quoted: Ok, The quick lowdown. Type I's(Metric/Euro) are the original of course. Metric mag notched, and have a uninterupted scallop/notch that runs along the lower edge of the upper receiver. Type II's(Metric/Euro)have a different scallop/notch profile that left a lil more metal where some receivers were cracking under severe punishment from sustained full auto firing. Offers no real benefit for semi auto guns. L1A1's(Commonwealth/Inch) look most like type I's but, are cut for Commonwealth/Inch patter magazines, have sand cuts internally that help spit out crud(when used with a sand cut bolt carrier), and have a minor change to accomodate the std folding cocking handle. If you have a commonwealth kit, I'd go with the L1A1 since DSA is now making those to keep it closest to original config.  If you have a metric( IMBEL, DSA, Coonan, etc.)kit, I'd stick with a Type I but, that's a personal preference. FYI-DSA's type I's can be had without the carry handle notch for those who think carry handles are stupid(might also add a bit more rigidity to the receiver) HTH Blitz

I thought type 1 receivers are stronger?!

Negative Groundfire, negative