OSA - 17 Design Lowers - Completed Builds Thread

[ssgrock3]

View attachment 332833

5.45 upper complete I picked up several years ago here. Osa milled lower

 

[O4L]

I've still got three OSA lowers that I haven't built.

 

[ssgrock3]

I've still got three OSA lowers that I haven't built.

I sold two last year or so, kept the two milled ones and assembled this past week

 

[NikatKimber]

I've got one of mine 90% complete as a .300 Blk pistol, just need optic/sights/sling. Using an adjustable gas block, so I need to tune it for subs.

 

[slas]

Picking up an unfired Colt LE6920 upper today to FINALLY start my build. Since it's my first I'm trying to wade through all the options on things like the lower parts kit and stock options. Suggestions are more than welcome.

 

[dlbleak]

I have one left that I’ll probably never build. Have one to my son when my grandson was born. One of these years we’ll build it together.

 

[slas]

My first complete lower build anyway, used a colt upper. Went with Palmetto lower build kit. Now I understand all the talk of lost springs and detents.

 

[teslawasframed]

My first complete lower build anyway, used a colt upper. Went with Palmetto lower build kit. Now I understand all the talk of lost springs and detents.

Next time, try assembling the fiddly pieces inside a 2-gallon ziploc bag...plenty of room and you can see what you're doing, but it keeps the flyers from disappearing, at least!

 

[slas]

Next time, try assembling the fiddly pieces inside a 2-gallon ziploc bag...plenty of room and you can see what you're doing, but it keeps the flyers from disappearing, at least!

Sounds like a great idea that comes from experience.

 

[teslawasframed]

Sounds like a great idea that comes from experience.

I honestly don't know how many ARs I put together before I figured that one out, but it was probably close to triple digits. Felt like slapping myself

Last year my department sent me to an armorer's course, and that was one of the tips the instructor gave the class. That, and using a cotter pin to install the spring and detent on the front takedown pin, were worth the time & cost of the class by themselves.