Leaderboard

Got the initial prototypes today, scheduled for production in about 3 weeks… slides very nice and is tight on the notches. Complete with “drain holes” for a punch to get the spring out. some surface finishing aspects will be improved for final run (even though these look pretty good). the wall thickness is so thin in some areas I may not be able to do black nitride. At least not a full bath (usually 90 minutes). I might do a short bath of 7 minutes or so to at least get a microscopic layer of corrosion resistance, then hot black oxide after. I’ll post more pics once I get it on the gun and do some function tests.

I’ve done the homework, here is the pricing for $138 list: 99 USD value (under the $100 ATF limit) Minor Firearms Component M4 6 Position Recoil Tube (Customs Label “Shotgun Accessories” HST Code 9305.20.80 Found in Chapter 93) $39 USD Value for 5 pack internal retaining springs (Customs Label “Screws Nuts and Bolts” HST Code 7318.13.00 found in Chapter 73) $20 shipping and handling is extra

Ammunition depot. 120 fetter for $69. They’re tinny shells that fit 7. Free shipping first order over 200. Just make an account.

Conventional thinking has always been (1) Back off one choke constriction with steel to achieve patterns similar to lead. In other words steel shot through a Improved Cylinder constriction will pattern like lead shot through a Modified choke and (2) Do not shoot steel through a Full or tighter choke constriction. The steel shot column is less fluid therefore it will not compress as easily in a tight choke resulting in erratic patterns and possible choke tube/barrel damage.

I've actually made a minor change based on this feedback on the latest batch (finishing up today) to address this concern. Thanks for pointing it out, gave me something to consider the past day. Was able to get the change in just in time.