it's probably a 552, the only american-made .22 that fires all three types of ........22 mrimfire interchangeably. good gun
1929 to 1933 The Improved version of the Remington model 6 became available circa 1905, and featured a blue frame in 24 in. barrel. Production continued until 1933. The earlier models had the original case colored frame.
The short answer is no. I have a Remington Model 1100 Circa ~1963 with a 30" barrel and integral Full choke. This barrel does not accept any additional chokes. You could procure a newer barrel relatively cheaply (roughly $200 new or much less used at a gun show) that will accept screw-in type chokes. Another alternative would be to install an after market screw-in choke system. Not all barrels are candidates, but many are. One such after market installer is "www.choketube.com".
As you correctly assumed the stamping of the numbers 2 & 4 on the barrel flats designates the choke of each barrel. 2 being the designation for a modified choke and 4 for a full choke.
Remington arms was first started by Eliphalet remington II in 1816.They started business in Litchfield,Herkimer county,NY circa 1816-1828. Remington has their history online, I put a pointer in related links.
Circa early 1927. There is a 2-digit year code stamped on the bottom of the barrel (under the stock). Bert H.
No more than 100 dollars
50-125 US dollars
50-1000 USD depending on EXACT configuration, condition, accessories, box, papers.
An inexpensive Belgian import, circa 1890-1914.
midvale nickel steel
circa 1921.I have # 116208 I think it is circa 1925.
A UMC CAN'T be circa 1903, it didn't become Remington UMC until 1912. I believe by the time UMC took over the model was on the receiver, it's probably a model 12 or possibly a later 121 if it's not quite as old. The value is GREATLY dependent on the condition, condition, and the condition, and of course which model and variation.