LR-308 upper question.

[technetium-99m]

If I buy this upper receiver I can use normal iron sights on my LR-308 with no funky one off machining operations correct?

[Wakal]

Yes.

There are two heights of gas block (in the standard DPMS 308 line; you would need "low" if you are ordering a complete upper from them). I've used regular .750" gas blocks with that "A3" 308 upper without issue, though, after turning down the barrel (the 24" 308 stainless barrels are OK, but only after being fixed...down to .750 and chopped to 18"

Alex

[lmccrock]

Didn't DPMS change their receiver rail height? Something annoyingly small but significant? Front sight not the issue but rear, maybe.

DPMS Forum topic

Lee

[technetium-99m]

Yes.

There are two heights of gas block (in the standard DPMS 308 line; you would need "low" if you are ordering a complete upper from them). I've used regular .750" gas blocks with that "A3" 308 upper without issue, though, after turning down the barrel (the 24" 308 stainless barrels are OK, but only after being fixed...down to .750 and chopped to 18"

Alex

Change 18" to 20" and you describe what I'm doing.

I already ordered it, I'll let everyone know if it doesn't solve my problem. Everyone around Oklahoma will hear a violent screaming sound hanging on the night air.

[Wakal]

I noticed that...the DPMS "slick side" uppers are now tall, so none of the AR pattern sights or scope mounts fit properly. The "forward assist" uppers are still the correct height. Cornered a couple of sales folks at SHOT, and they told me that they made the standard uppers...taller...because the "distance" shooters were bitching about having to buy expensive mounts instead of regular rings.

Easy to forget just how small of a market the three gun crowd really is...which is a shame, IMO.

A