I recently "built" a Colt Commando pistol and am planning on sending in my Form 1 with the $200 tax to SBR this lower and not worry about the ever changing AR Pistol laws.
I finished this one with a factory new Colt M4 Carbine lower receiver and swapped out parts for a SB Tactical SBA3 brace, Geissele SD-3G trigger, Geissele Super 42 H2 buffer and braided spring. For the upper I started with a factory new Colt 6933 Commando 11.5" upper and added a BCM Gunfighter Mod 3 charging handle and Midwest Industries MI-20M drop in 2 piece free float M Lok handguard.
I have another pistol upper I recently put together in 6.8 SPC on a lower that is marked "multi cal."
This is where my question comes in. I was under the assumption that once I have a SBR registered lower I can pin practically any upper onto it I want, so long as the caliber of the upper matches the caliber engraving on the lower. Is that correct, and if so, can the "multi cal." lower have any caliber upper on it? If that's not the case, can I Form 1 my 5.56 marked Colt and run my 6.8 upper on it if I wanted?
Thanks in advance
Cory
I finished this one with a factory new Colt M4 Carbine lower receiver and swapped out parts for a SB Tactical SBA3 brace, Geissele SD-3G trigger, Geissele Super 42 H2 buffer and braided spring. For the upper I started with a factory new Colt 6933 Commando 11.5" upper and added a BCM Gunfighter Mod 3 charging handle and Midwest Industries MI-20M drop in 2 piece free float M Lok handguard.
I have another pistol upper I recently put together in 6.8 SPC on a lower that is marked "multi cal."
This is where my question comes in. I was under the assumption that once I have a SBR registered lower I can pin practically any upper onto it I want, so long as the caliber of the upper matches the caliber engraving on the lower. Is that correct, and if so, can the "multi cal." lower have any caliber upper on it? If that's not the case, can I Form 1 my 5.56 marked Colt and run my 6.8 upper on it if I wanted?
Thanks in advance
Cory