Re: .338lm ar upper!
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Btillr</div><div class="ubbcode-body">what pros/cons are you talking about ORD?</div></div>
<span style="text-decoration: underline">Pros</span>
1) low cost compared to complete rifles;
2) easily constructed out of an existing AR lower;
3) no additional FFL paperwork for "just an upper";
4) lighter weight for ease of transport/mobility.
<span style="text-decoration: underline">Cons</span>
1) depending on the make/model...the quality of SOME BMG/338LM uppers is questionable at best...highly dangerous at worst;
2) lighter weight generally equals more recoil;
3) with few exceptions, accuracy with the BMG/338LM upper coversions is not great (but then again...most people who want serious shooters/long range precision buy/build complete rifles and don't skimp with conversions. The Ferret50 and ALS conversions are an exception to this rule as I have personally witnesses both perform exceedingly well, including the Ferret50 shoot screamers and win FCSA-sponsored competitions.;
4) some people have reported damage to lower receiver takedown pins/pin holes when using conversion uppers.
Those are a few quick examples off the top of my head. If you run a search (basic Google...maybe even here on the Hide), you should find plenty of data on the BMG and larger caliber AR-15 upper conversions. As others have said...hold out for a complete rifle. There have been a couple good deals here in recent months on the Remington 338LM.