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i’ve been off the forms for almost 3 years and haven’t been paying attention to title twos, what does this mean ? Thanks.

Yeah, I got into OBS RPB's back in the early 90's to use for parts in case my registered full auto Ingram or MAC needed parts. I later got crazy and bought a dozen or so of them, amassing a collection of each variant RPB OBS. I would have been better buying shares of Apple or Google with the...

I dug out a new in box Demro T.A.C. (one?) 45acp that I've not seen since my FFL received it years ago, I do recall that it doesn't have the grip combination (briefcase style) lock. I haven't seen one come up for sale in awhile, are these so obscure that there/s not much of a price guide for...

I have one mounted on one of my OBS RPB pistols, I need to dig it out and install it on the FA M10 Caribne. Thanks for that tidbit !!

he he, it’s pretty something all right !

First photo is a SAC M10-45, RPB OBS in original condition followed by SAC M10-9mm RPB OBS. 3rd is one of 7 SAC M10-9mm RPB OBS made in SS (I was lucky to find the mag). 4th is the baby SAC M11-380 RPB OBS, these 380 OBS carbines never came with the modified rear sights like most the 45's &...

I've owned a dozen over the years and now down to 4 or 5 but have forgotten most of what I used to know about these RPB varieties. Wish I had bought AK kits or any of a plethora of other firearms than RPB OB semi's back in the early 90's as their values have NOT appreciated with inflation...

Can you clarify what you mean by conversion ?, these were production firearms. Also there's SAC XXX prefix varieties as well, the Semi-Auto Carbine.

Nevermind, I see your post over in marketplace. .

Only the best firearms

when a MAC machine gun retails for nearly $10 grand, paying $1500 for essentially a NFA variant of the same might seem a bargain to some folks. Besides, what’s the total value of all the parts of one of the 6 different RPB open bolt semi’s, plus a couple original mags worth nowadays? I mean most...

I've owned 2 new in box KG-9 semi's and they both came with modified Walther MP-9 mags. I fired one and it ran fine with those mags.

Open bolt RPB's have not really been a good financial investment these past 25 years, they were fetching $350-$700 even prior to the Federal AWB in '94, nearly the same prices as Form-4 MAC's at the time.

Is this why the Stephenville "Texas Mac's" M-10's, the one's that were assembled using Powder Springs flats, had the Cobray Emblem routed off.. because the Cobray trade mark was held by RPB Ind. at the time ?

Follow the link in post #2

At one time I’d have paid several grand for this m20a1 but I’m a few years older now and realize that a firearm can be genuinely rare, only one of a dozen produced and even have some historical value but can be too well unknown to be a unicorn to anyone.

My AC556 runs the 90-rd snail drums and RamLine MAK-1530 plastic mags no problem, and the same RamLine's run in my M16 as well.

I think the ATeeF relaxed the OAL rules since the early 80's, that at one time the rifle's collapsed length was the 26" benchmark, whereas now the OAL is calculated with stocks fully opened. FWIR I measured mine and determined the FH wasn't necessary... but it looks cool to me :)

Rear sight in that color photo is a bonafide RPB factory installed sight. The 3 carbines in the B&W photos are all machine guns, not OBS like in the color photo. I now see that you are correct about the flash hider being for grease gun.

Nice find. I have a slew of these with only about 25% having the #4 MAC logo. I *think* I have a box or 2 sealed in a yellow plastic ?