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AR15.COM
AR Sponsor
4/4/2015 12:34:27 PM EDT
Hello all!

I am thinking about my first AR-15build & I've toyed with many options, from finishing an 80% to mixing & matching uppers & lowers. I am
currently looking into Spikes lower & BCM upper. I will be shooting this 20" Frankengun a lot. I want to get the A4 style flat top but use an A2
buttstock on it with A1 style triangular front handguard. From my earlier reading, I get the impression that BCM uppers are mil-spec USGI
equivalent. Is the Spikes lower also mil-spec USGI equivalent?

Thanks in advance for all opinions! :)
4/4/2015 1:35:06 PM EDT
[#1]
Quoted:
Hello all!

I am thinking about my first AR-15build & I've toyed with many options, from finishing an 80% to mixing & matching uppers & lowers. I am
currently looking into Spikes lower & BCM upper. I will be shooting this 20" Frankengun a lot. I want to get the A4 style flat top but use an A2
buttstock on it with A1 style triangular front handguard. From my earlier reading, I get the impression that BCM uppers are mil-spec USGI
equivalent. Is the Spikes lower also mil-spec USGI equivalent?

Thanks in advance for all opinions! :)
View Quote

You'll get good parts from either company.
AR Sponsor