This is a list of all the screws that are in a VM and their length and thread size. A list of drill sizes is also included if you need to drill and tap a new hole.

Screw Size	Quantity	Head Style*	Where they go	Washer
10-32 x 3/16"	1	set screw	Top of VM, behind the feed block
10-32 x 1/4"	1	set screw	Feed block
8-32 x 1/4"	4	button	Side Rails/Trigger plates
8-32 x 3/8"	2	button	'Magic fingers' and plate on feed block
10-32 x 1/2"	2	button	Feed block	2
10-32 x 1/2"	2	button	Valve	2
10-32 x 1/2"	2	button	Bottom back block	2
8-32 x 7/8"	1	cap	Cocking knob
10-32 x 1/2"	2	cap	Hand guard	2
10-32 x 1/2"	1	cap	Grip lug
10-32 x 1"	1	cap	Grip lug
10-32 x 1"	1	cap	Hammer, through the white bumper	1
1/4-28 x 3/4"	1	cap	Through Grip and into grip lug
1/4-20 x 2 1/2"	1	cap	Back of VM, through both back blocks from the top	1
1/8" NPT	1	n.a.	Side tap CA (VM-Magnum)
3/8-16 x 7" (min)	1	n.a.	For Valve removal if you don't have a valve tool
10-32 x 3/8"	2	thumb	Ambidextrious feed block plate (VM-Magnum)	2

* Head style refers to factory original parts

Button Head	Cap Head	Set Screw	Thumb Screw

Screw Size	Head Style	Total Needed
10-32 x 3/16"	set screw	1
10-32 x 1/4"	set screw	1
8-32 x 1/4"	button	4
8-32 x 3/8"	button	2
10-32 x 1/2"	button	6
8-32 x 7/8"	cap	1
10-32 x 1/2"	cap	3
10-32 x 1"	cap	2
1/4-28 x 3/4"	cap	1
1/4-20 x 2 1/2"	cap	1
#10 washer	n.a.	8
1/4 washer	n.a.	1

Thread Size	Drill Size	Nearest Fractional
8-32	No. 29	9/64
10-32	No. 21	11/64
1/4-20	No. 7	13/64
1/4-28	No. 3	7/32
1/8" NPT	R	11/32"
3/8-16	5/16