yes and they sell rifled slugs that shoot better
I own a glenfield 778 without the magazine plug it can hold a maximum of 6 rounds on in the chamber and 5 in the magazine
$200
Marlin started producing the 778 in 1979, production ended in 1984
To remove the buttstock from a Glenfield Model 778, first ensure the firearm is unloaded and safe to handle. Locate and unscrew the screws that attach the buttstock to the receiver, typically found at the rear of the receiver and possibly on the underside. Once the screws are removed, gently pull the buttstock away from the receiver, being cautious not to damage any surrounding components. If the stock is stubborn, check for any additional screws or clips that may need to be released.
I am not 100 % sure, but the research I have done indicates that they were produced from 1978-1984, with 1984 being the last year of production. The Marlin Model 120 is the continuation of the Glenfield 778 with some parts being interchangable.
you can find them here... http://www.e-gunparts.com/productschem.asp?chrMasterModel=082Zz778
Answer the glenfield by marlin is compatible with marlin 120 12ga barrels are available for the 120 the only difference is the stocks wich are also interchangable the 120 is higher quality I love my glenfieldThat model is obsolete and you are not going to find a slug barrel. If you must use slugs, you can have the existing barrel modified to accept interchangeable choke tubes and use a rifled tube when shooting slugs.
It has value as a shooter only - not a collector piece. $100-$200.
In good working condition $150 to $200
This is actually a Marlin 120 with a cheaper grade stock. In good condition I would take less than $200.00 for a sturdy and reliable weapon. It has been mechanically compared to the Winchester Model 12.
The value of a Glenfield Model 778 pump shotgun typically ranges from $150 to $300, depending on its condition, age, and any modifications. Collectors and enthusiasts may pay more for models in excellent condition or with original features. It's advisable to check local listings and consult with firearms appraisers for a more accurate valuation based on specific circumstances.
To break down a Glenfield Model 778, first ensure the firearm is unloaded. Next, remove the magazine and pull the bolt back to check the chamber for any remaining cartridges. Then, locate the takedown screw or latch, typically found on the underside of the receiver, and loosen or disengage it. Finally, slide the barrel and receiver apart, separating the components for cleaning or maintenance. Always refer to the manufacturer's manual for specific instructions and safety precautions.