18 USC 922r states that it is illegal to assemble from imported parts any rifle or shotgun which would be illegal to import - i.e., anything not considered a "sporting" weapon. Title 27 Chapter 1 Section 178.39 states..
"(a) No person shall assemble a semiautomatic rifle or any shotgun using more than 10 of the imported parts listed in paragraph (c) of this section if the assembled firearm is prohibited from importation under section 925(d)(3) as not being particularly suitable for or readily adaptable to sporting purposes."
Thus, the rifle you assemble, if it is banned from importation without the compliance parts, cannot contain more than 10 of the following "countable" parts, and the number of US made compliance parts necessary will be based on how many parts there are to the weapon according to the BATFE breakdown chart.
"Countable" parts include:
(1) Frames, receivers, receiver castings, forgings or stampings *
(2) Barrels *
(3) Barrel extensions
(4) Mounting blocks (trunions) *
(5) Muzzle attachments *
(6) Bolts *
(7) Bolt carriers *
(8) Operating rods
(9) Gas pistons *
(10) Trigger housings
(11) Triggers *
(12) Hammers *
(13) Sears
(14) Disconnectors *
(15) Buttstocks *
(16) Pistol grips *
(17) Forearms, handguards *
(18) Magazine bodies *
(19) Followers *
(20) Floorplates *
Depends on the rifle. some have 10, some 50 or more.
webdept@gunpartscorp.com has many parts and breakdown books for many Stevens rifles and shotguns.
4 khata
It depends on the set up of the rifle but a typical A2 style with collapsing stock has about 106 parts.
thirty-five thousand
5
Unfortunately your Model 10 Mossberg (one word) rifle was only made from 1934-1936, with the end result that parts will be VERY hard to find. Gunpartscorp has only a few parts for these on their website. havlinsales has many Mossberg .22 parts (and run the Mossberg Collector's Society) Finally, a good gunsmith can make many of the small parts that you rifle may need- but finding parts WILL be difficult. Good luck-
There are many instances where greater accuracy is required.
ten thousands and more
You can check with Numrich on their website as gunpartscorp, but this rifle has been out of production for many years, and parts are NT commonly available- sorry.
Contact Crosman (Customer service.) The Rifle was made between 1999-2001. Some parts are still avalable. (see the link below)"Some parts are available" according to Crosman customer service section of their web site. "Bryan and associates" has many obsolete parts.
You will have to specify if you mean for a total breakdown, field stripping, cleaning, etc..