REAR SURFACE AREA Device incorporates features to prevent use as a shouldering device = 0.
Minimized Rear Surface lacking features to discourage shouldering = 1. Rear Surface useful for shouldering the firearm = 2. Material added to increase Rear Surface for shouldering = 3.
ADJUSTABILITY Non-adjustable, fixed design = 0. Adjustable or telescoping attachment designed for shouldering = 2.
STABILIZING SUPPORT Counterbalance Design - Non-Folding = 0.
Counterbalance Design that Folds creating Rear Contact Surface = 1.
OR:
“Fin- type” design WITH Arm Strap = 0.
“Fin- type” design WITHOUT Arm Strap = 2.
OR:
“Cuff-type” design that FULLY wraps around arm = 0.
“Cuff-type” design that PARTIALLY wraps around arm = 1.
“Cuff-type” design that FAILS to wrap around arm = 2.
“Split-stock” configuration not designed to wrap around shooter's arm = 3.
LENGTH OF PULL - w/Accessory in Rear most “Locked Position” Less than 10-1/2 Inches = 0.
10-1/2 but under 11-1/2 Inches = 1.
11-1/2 but under 12-1/2 Inches = 2.
12-1/2 but under 13-1/2 Inches = 3.
13-1/2 Inches and Over = 4. (Measured from the center of the trigger to the center of the shoulder device / “stabilizing brace”)
ATTACHMENT METHOD Standard AR-type Pistol Buffer Tube (6-6-1/2 Inches) = 0.
AR-type Pistol Buffer Tube with Adjustment Notches (KAK-type) = 1.
Adjustable Rifle Buffer Tube = 1.
Adjustable PDW-type guide rails = 1.
Extended AR-type Pistol Buffer Tube = 2.
Inclusion of Folding Adapter extending length of pull = 2.
Use of “Spacers” to extend length of pull = 2.
Modified shoulder stock with rear replaced by “stabilizing brace” = 3.
Attachment method creates an unusable aim-point (slant) = 3.
“STABILIZING BRACE" MODIFICATIONS / CONFIGURATION “Cuff-type” or “fin-type” design with strap too short to function
= 2.
“Cuff-type” or “fin-type” design with strap made out of elastic material
= 2.
“Fin-type” lacking an arm strap
= 2.
“Cuff-type” design with strap REMOVED
= 4.
“Brace” accessory modified for shouldering
= 4.
Modified Shoulder Stock (originally a Shoulder Stock) = 4.
PERIPHERAL ACCESSORIES Presence of a Hand Stop
= 2.
Presence of a Secondary Grip (indicating two-handed fire)
= 4.
Presence of Rifle-type Back-up / Flip-up Sights / Or no sights
= 1.
Presence of Reflex Sight with FTS Magnifier w/ Limited Eye-Relief
= 2.
Presence of a Sight/Scope with Eye Relief Incompatible with one-handed fire
= 4.
Presence of a bipod / monopod
= 2.
Weapon as configured weighing more than 120 ounces (Weighed with magazine - unloaded)
= 4.