I have been looking for parts out there to build up my L1A1's and thought I would share my findings with everyone that wants to put theirs together. You need 7 parts to do a build. With either a DSA or Enterprise Inch pattern receiver, you only need 6 more.....
Arizona Response Systems has 80% completed British style L1A1 5 slot flash hiders. They need the slots completed, the bayonet lug grooves cut, and the retaining ring groove cut and drilled. They run $50 for one and $90 for two plus $6.50 shipping. Contact him at: firstname.lastname@example.org
Ergo Grips has L1A1 grips on closeout for those that have the old Brit plastic stocks.https://www.ergogrips.net/item-detail.cfm?ID=4210&storeid=1&image=l1a1.gif&CFID=2 4772596&CFTOKEN=28068625 Make sure that you fit them with a fine file and don't pound on them because they will chip. Once they are fit, they look great.
Gunthings.com have US made Trigger, Hammer, and Sear sets for the Inch pattern rifles for $85.00. They also have US made gas pistons for $27.00.http://www.gunthings.com/
Ironwood Creations offers new made wood for L1A1's: http://ironwooddesigns.com/2aprod/1zFALprod.html A little pricey, but look awesome.
Inter Ord has barrels by Green Mountain, but they are not listed on their web site. They have them for $189.99. These are the barrels that were offered with the kits early on and will need the gas block mounted and gas hole drilled.
I know that there are floor plates and followers out there, but I don't want to have to modify all of my mags and then worry about an occasional unmodified one getting mixed in.